Congressional Investigations

Clients facing hearings and investigations before the US Congress call on Jenner & Block’s bipartisan Congressional Investigations team for our extensive experience in preparing witnesses for, and defending, depositions and interviews, as well as managing the response to information requests and subpoenas. We regularly guide clients through the unique challenges of Congressional hearings, from intensive witness preparation and mock sessions to strategic messaging and engagement with key stakeholders. Often our clients face simultaneous legal inquiries across many different forums, including litigation and regulatory actions, on the same subject that Congress is investigating or legislating–therefore, we provide clients with a comprehensive strategy to address the issues across proceedings. Because these investigations frequently do not happen in a vacuum, we devise 360-degree strategies for clients to mitigate and anticipate related risks and handle parallel proceedings, such as civil actions, criminal and regulatory investigations, and business reputation attacks.

Our bipartisan team has a unique blend of experience—as congressional staff, as government lawyers, and in private practice—responding to some of the most high-profile congressional investigations and hearings in recent memory. With leadership drawn from the House, Senate, and Executive Branch, our team offers clients a rare 360-degree perspective—enabling them to navigate today’s scrutiny and tomorrow’s political shifts with confidence.

Congressional Investigations Require Specialized Counsel

The media landscape and congressional oversight tactics and strategy have changed dramatically in recent years. Our bipartisan Congressional Investigations team leverages deep experience with how congressional committees conduct investigations and apply pressure, including the unique norms and enforcement procedures wielded by different committees and Members of Congress, all with a view to the importance of the surrounding political and regulatory landscape. Our team knows how Members of Congress and congressional staffers pursue their inquiries and maximize the tools at their disposal, informing the strategic options available in response to an investigation, ranging from document negotiation, to proactive communications strategy, to litigation. Jenner’s Congressional Investigations team includes former government officials who understand how Congress leverages its oversight tools in today's complex political environment, including:

    • Emily Loeb, Co-Chair, Congressional Investigations Practice; Co-Chair, Government Controversies and Public Policy Litigation Practice; Former Associate Deputy Attorney General at the US Department of Justice; Former Associate White House Counsel 
    • Ashley Callen, Co-Chair, Congressional Investigations Practice; Former General Counsel to Speaker Mike Johnson (R-LA); Former General Counsel to Majority Leader Steve Scalise (R-LA); Former Deputy Staff Director for the Oversight and Government Reform Committee; Former Chief Oversight Counsel to the House Judiciary Committee
    • Matt Klapper, Co-Chair, Congressional Investigations Practice; Co-Chair, Global Crisis Management and Strategic Risk Practice; Former Chief of Staff to a US Senator; Former Chief of Staff and Senior Counselor to the Attorney General at the United States Department of Justice
    • Jon Skladany, Partner; former Special Counsel to the House of Representatives Task Force on the Attempted Assassinations of Donald J. Trump; former Republican Chief Counsel for Oversight to the House Committee on Financial Services, and former Republican Staff Director and Chief Policy Counsel to the House Committee on Oversight and Government Reform
    • Tom Perrelli, Firm Chair; Co-Chair, Government Controversies and Public Policy Litigation Practice; Co-Chair, State Attorneys General Practice; Former Associate Attorney General of the United States

360-degree Approach to Preparing Clients

As high-profile legislative inquiries and regulatory oversight proliferate in governments across the globe, Jenner’s team ensures that executives are prepared to answer tough questions—whether before the US Congress or European parliaments. We help clients make judgments and navigate trade-offs in the context of contentious litigation, settlement of matters, regulatory advocacy, communications strategy, investor relations, and the myriad of other factors that go into advancing the client’s objectives in the most difficult of circumstances. We are thought partners with our clients and are invested in their success for the long term.

Complex Crises Need Holistic Strategies

While crises at the intersection of congressional attention, litigation, government investigations, and media scrutiny can arise in almost any industry, they require experienced counsel to navigate. Often multiple government actors may be examining the same nexus of facts: congressional committees demand to hear from the CEO despite ongoing internal, state, or federal investigations, while the threat from civil litigation looms. In that context, the role of legal advisor entails being a holistic strategist: understanding the evolving political motivations and incentives driving the inquiries; advising how to answer similar questions being posed in different forums at the same time; and anticipating and mitigating related legal and business reputation risks. In the age of social media, a full-blown corporate crisis can break out quickly and turn the tide for companies’ brands and financial strength, making advance preparation critical. Our team understands and counsels on how a legal strategy and a communications strategy must run on parallel and cohesive tracks.  

Jenner provides incisive advice. The team has a deep breadth of knowledge and is incredibly strategic, thinking through all the angles and helping clients to feel totally prepared.

Chambers USA 2026

Jenner provides incisive advice. The team has a deep breadth of knowledge and is incredibly strategic, thinking through all the angles and helping clients to feel totally prepared.

Chambers USA 2026

Jenner brings deep subject-matter expertise and strong industry connections together, combining careful planning and organization with precise execution. The team balances professionalism with a personable approach, which makes them both highly effective and easy to work with.

Chambers USA 2026

Jenner & Block possesses a team of highly qualified practitioners who have spent meaningful time having a meaningful impact while working in government. This experience makes them imminently qualified to help clients navigate the nuances and intricacies of complex governmental and congressional investigations.

Chambers USA 2026

Jenner and their lawyers have a deep understanding of how their work and advocacy will be perceived by members of Congress and the press. They are better at reputation management than their competitors because they understand their work defending a client must be not only vigorous but also responsive and narrative.

Chambers USA 2025

Of all the teams that we have worked with on the legal side, they are by far the best at understanding how the company works, what our interests are, the jurisdictional intricacies, and more.

Chambers USA 2025

The department's experience, ability to manage both clients and congressional staffers, thoughtfulness, dedication, critical thinking, and ability to adjust and pivot as necessary, especially with congressional curveballs, distinguish it from others in the industry.

Chambers USA 2025

Jenner & Block works tirelessly to secure a favorable outcome.

Chambers USA 2025

The judgment and preparation of the lawyers involved was unparalleled. Their knowledge of the Senate process and relationships with the relevant senators and staffers made the process far easier to navigate.

Chambers USA 2025

  • Prepared the head of a large public college system to testify before the House Committee on Education and the Workforce during a high-profile investigation into antisemitism on college campuses.
  • Represented a major G-SIB financial institution throughout a year-long investigation by the Senate Permanent Subcommittee on Investigations, which included preparing company executives to brief Subcommittee staff and to testify at a public hearing before the Subcommittee.
  • Represented one of the nation’s largest associations of community-based health care providers in a high-stakes investigation initiated by the House Committee on Oversight and Government Reform's Subcommittee on Delivering on Government Efficiency, successfully de-escalating the inquiry while protecting the organization's critical care mission and national reputation.
  • Represented large multinational technology company and prepared company witnesses for high-profile public hearings and panel discussions before the US Congress and state legislatures, the European Parliament and Commission, the UK Parliament, the Korean National Assembly, the Australian Parliament, and a Canadian regulator.
  • Advised President Clinton and Secretary of State Clinton in response to subpoenas for depositions issued by the House Committee on Oversight and Government Reform during a high-profile investigation.
  • Represented a major technology company in a year-long congressional antitrust investigation including preparing CEO for high-profile hearing.
  • Prepared Albertsons CEO Vivek Sankaran for testimony before the Senate Judiciary Subcommittee on Competition Policy, Antitrust, and Consumer Rights on November 29, 2022, following the announcement of the proposed merger with Kroger. Valued at $25 billion, the deal was one of the largest announced in 2022, receiving extensive media coverage across the US.
  • Prepared Marcelo Claure, Sprint's Executive Chairman, for several congressional hearings on the proposed $26 billion T-Mobile-Sprint merger and prepared Mr. Claure for his testimony in the lawsuit brought by state attorneys general in SDNY challenging the acquisition.
  • Assisted non-profit hospitals in responding to House Education and Workforce and Senate HELP Committee inquiries regarding the provision of a certain type of medical care.
  • Counseled an American regional bank in a sprawling investigation by the House Judiciary Committee.
  • Advised a large federal contractor during an investigation into sexual assault and misconduct by the House Science Committee, including preparing a company executive for a briefing with Committee staff.
  • Prepared several members of President Biden's Cabinet, including the former OMB Director and Acting Secretary of Labor, for transcribed interviews with the Senate Permanent Subcommittee on Investigations regarding the President's health and mental acuity during his time in office.
  • Represented a former senior White House official in a high-profile congressional investigation by the House Foreign Affairs Committee, which included a transcribed interview in the summer of 2024.
  • Advised Marriott on response to all aspects of a high-profile data breach, including preparation for Senate testimony.
  • Advised a securities marketplace participant in connection with all aspects of Senate and House's investigations into the January 2021 Robinhood/GameStop market events, as well as related governmental investigations.

Experience

  • Prepared the head of a large public college system to testify before the House Committee on Education and the Workforce during a high-profile investigation into antisemitism on college campuses.
  • Represented a major G-SIB financial institution throughout a year-long investigation by the Senate Permanent Subcommittee on Investigations, which included preparing company executives to brief Subcommittee staff and to testify at a public hearing before the Subcommittee.
  • Represented one of the nation’s largest associations of community-based health care providers in a high-stakes investigation initiated by the House Committee on Oversight and Government Reform's Subcommittee on Delivering on Government Efficiency, successfully de-escalating the inquiry while protecting the organization's critical care mission and national reputation.
  • Represented large multinational technology company and prepared company witnesses for high-profile public hearings and panel discussions before the US Congress and state legislatures, the European Parliament and Commission, the UK Parliament, the Korean National Assembly, the Australian Parliament, and a Canadian regulator.
  • Advised President Clinton and Secretary of State Clinton in response to subpoenas for depositions issued by the House Committee on Oversight and Government Reform during a high-profile investigation.
  • Represented a major technology company in a year-long congressional antitrust investigation including preparing CEO for high-profile hearing.
  • Prepared Albertsons CEO Vivek Sankaran for testimony before the Senate Judiciary Subcommittee on Competition Policy, Antitrust, and Consumer Rights on November 29, 2022, following the announcement of the proposed merger with Kroger. Valued at $25 billion, the deal was one of the largest announced in 2022, receiving extensive media coverage across the US.
  • Prepared Marcelo Claure, Sprint's Executive Chairman, for several congressional hearings on the proposed $26 billion T-Mobile-Sprint merger and prepared Mr. Claure for his testimony in the lawsuit brought by state attorneys general in SDNY challenging the acquisition.
  • Assisted non-profit hospitals in responding to House Education and Workforce and Senate HELP Committee inquiries regarding the provision of a certain type of medical care.
  • Counseled an American regional bank in a sprawling investigation by the House Judiciary Committee.
  • Advised a large federal contractor during an investigation into sexual assault and misconduct by the House Science Committee, including preparing a company executive for a briefing with Committee staff.
  • Prepared several members of President Biden's Cabinet, including the former OMB Director and Acting Secretary of Labor, for transcribed interviews with the Senate Permanent Subcommittee on Investigations regarding the President's health and mental acuity during his time in office.
  • Represented a former senior White House official in a high-profile congressional investigation by the House Foreign Affairs Committee, which included a transcribed interview in the summer of 2024.
  • Advised Marriott on response to all aspects of a high-profile data breach, including preparation for Senate testimony.
  • Advised a securities marketplace participant in connection with all aspects of Senate and House's investigations into the January 2021 Robinhood/GameStop market events, as well as related governmental investigations.
Congressional Investigations

Clients facing hearings and investigations before the US Congress call on Jenner & Block’s bipartisan Congressional Investigations team for our extensive experience in preparing witnesses for, and defending, depositions and interviews, as well as managing the response to information requests and subpoenas. We regularly guide clients through the unique challenges of Congressional hearings, from intensive witness preparation and mock sessions to strategic messaging and engagement with key stakeholders. Often our clients face simultaneous legal inquiries across many different forums, including litigation and regulatory actions, on the same subject that Congress is investigating or legislating–therefore, we provide clients with a comprehensive strategy to address the issues across proceedings. Because these investigations frequently do not happen in a vacuum, we devise 360-degree strategies for clients to mitigate and anticipate related risks and handle parallel proceedings, such as civil actions, criminal and regulatory investigations, and business reputation attacks.

Our bipartisan team has a unique blend of experience—as congressional staff, as government lawyers, and in private practice—responding to some of the most high-profile congressional investigations and hearings in recent memory. With leadership drawn from the House, Senate, and Executive Branch, our team offers clients a rare 360-degree perspective—enabling them to navigate today’s scrutiny and tomorrow’s political shifts with confidence.

Congressional Investigations Require Specialized Counsel

The media landscape and congressional oversight tactics and strategy have changed dramatically in recent years. Our bipartisan Congressional Investigations team leverages deep experience with how congressional committees conduct investigations and apply pressure, including the unique norms and enforcement procedures wielded by different committees and Members of Congress, all with a view to the importance of the surrounding political and regulatory landscape. Our team knows how Members of Congress and congressional staffers pursue their inquiries and maximize the tools at their disposal, informing the strategic options available in response to an investigation, ranging from document negotiation, to proactive communications strategy, to litigation. Jenner’s Congressional Investigations team includes former government officials who understand how Congress leverages its oversight tools in today's complex political environment, including:

    • Emily Loeb, Co-Chair, Congressional Investigations Practice; Co-Chair, Government Controversies and Public Policy Litigation Practice; Former Associate Deputy Attorney General at the US Department of Justice; Former Associate White House Counsel 
    • Ashley Callen, Co-Chair, Congressional Investigations Practice; Former General Counsel to Speaker Mike Johnson (R-LA); Former General Counsel to Majority Leader Steve Scalise (R-LA); Former Deputy Staff Director for the Oversight and Government Reform Committee; Former Chief Oversight Counsel to the House Judiciary Committee
    • Matt Klapper, Co-Chair, Congressional Investigations Practice; Co-Chair, Global Crisis Management and Strategic Risk Practice; Former Chief of Staff to a US Senator; Former Chief of Staff and Senior Counselor to the Attorney General at the United States Department of Justice
    • Jon Skladany, Partner; former Special Counsel to the House of Representatives Task Force on the Attempted Assassinations of Donald J. Trump; former Republican Chief Counsel for Oversight to the House Committee on Financial Services, and former Republican Staff Director and Chief Policy Counsel to the House Committee on Oversight and Government Reform
    • Tom Perrelli, Firm Chair; Co-Chair, Government Controversies and Public Policy Litigation Practice; Co-Chair, State Attorneys General Practice; Former Associate Attorney General of the United States

360-degree Approach to Preparing Clients

As high-profile legislative inquiries and regulatory oversight proliferate in governments across the globe, Jenner’s team ensures that executives are prepared to answer tough questions—whether before the US Congress or European parliaments. We help clients make judgments and navigate trade-offs in the context of contentious litigation, settlement of matters, regulatory advocacy, communications strategy, investor relations, and the myriad of other factors that go into advancing the client’s objectives in the most difficult of circumstances. We are thought partners with our clients and are invested in their success for the long term.

Complex Crises Need Holistic Strategies

While crises at the intersection of congressional attention, litigation, government investigations, and media scrutiny can arise in almost any industry, they require experienced counsel to navigate. Often multiple government actors may be examining the same nexus of facts: congressional committees demand to hear from the CEO despite ongoing internal, state, or federal investigations, while the threat from civil litigation looms. In that context, the role of legal advisor entails being a holistic strategist: understanding the evolving political motivations and incentives driving the inquiries; advising how to answer similar questions being posed in different forums at the same time; and anticipating and mitigating related legal and business reputation risks. In the age of social media, a full-blown corporate crisis can break out quickly and turn the tide for companies’ brands and financial strength, making advance preparation critical. Our team understands and counsels on how a legal strategy and a communications strategy must run on parallel and cohesive tracks.  

Jenner provides incisive advice. The team has a deep breadth of knowledge and is incredibly strategic, thinking through all the angles and helping clients to feel totally prepared.

Chambers USA 2026

Jenner provides incisive advice. The team has a deep breadth of knowledge and is incredibly strategic, thinking through all the angles and helping clients to feel totally prepared.

Chambers USA 2026

Jenner brings deep subject-matter expertise and strong industry connections together, combining careful planning and organization with precise execution. The team balances professionalism with a personable approach, which makes them both highly effective and easy to work with.

Chambers USA 2026

Jenner & Block possesses a team of highly qualified practitioners who have spent meaningful time having a meaningful impact while working in government. This experience makes them imminently qualified to help clients navigate the nuances and intricacies of complex governmental and congressional investigations.

Chambers USA 2026

Jenner and their lawyers have a deep understanding of how their work and advocacy will be perceived by members of Congress and the press. They are better at reputation management than their competitors because they understand their work defending a client must be not only vigorous but also responsive and narrative.

Chambers USA 2025

Of all the teams that we have worked with on the legal side, they are by far the best at understanding how the company works, what our interests are, the jurisdictional intricacies, and more.

Chambers USA 2025

The department's experience, ability to manage both clients and congressional staffers, thoughtfulness, dedication, critical thinking, and ability to adjust and pivot as necessary, especially with congressional curveballs, distinguish it from others in the industry.

Chambers USA 2025

Jenner & Block works tirelessly to secure a favorable outcome.

Chambers USA 2025

The judgment and preparation of the lawyers involved was unparalleled. Their knowledge of the Senate process and relationships with the relevant senators and staffers made the process far easier to navigate.

Chambers USA 2025

  • Prepared the head of a large public college system to testify before the House Committee on Education and the Workforce during a high-profile investigation into antisemitism on college campuses.
  • Represented a major G-SIB financial institution throughout a year-long investigation by the Senate Permanent Subcommittee on Investigations, which included preparing company executives to brief Subcommittee staff and to testify at a public hearing before the Subcommittee.
  • Represented one of the nation’s largest associations of community-based health care providers in a high-stakes investigation initiated by the House Committee on Oversight and Government Reform's Subcommittee on Delivering on Government Efficiency, successfully de-escalating the inquiry while protecting the organization's critical care mission and national reputation.
  • Represented large multinational technology company and prepared company witnesses for high-profile public hearings and panel discussions before the US Congress and state legislatures, the European Parliament and Commission, the UK Parliament, the Korean National Assembly, the Australian Parliament, and a Canadian regulator.
  • Advised President Clinton and Secretary of State Clinton in response to subpoenas for depositions issued by the House Committee on Oversight and Government Reform during a high-profile investigation.
  • Represented a major technology company in a year-long congressional antitrust investigation including preparing CEO for high-profile hearing.
  • Prepared Albertsons CEO Vivek Sankaran for testimony before the Senate Judiciary Subcommittee on Competition Policy, Antitrust, and Consumer Rights on November 29, 2022, following the announcement of the proposed merger with Kroger. Valued at $25 billion, the deal was one of the largest announced in 2022, receiving extensive media coverage across the US.
  • Prepared Marcelo Claure, Sprint's Executive Chairman, for several congressional hearings on the proposed $26 billion T-Mobile-Sprint merger and prepared Mr. Claure for his testimony in the lawsuit brought by state attorneys general in SDNY challenging the acquisition.
  • Assisted non-profit hospitals in responding to House Education and Workforce and Senate HELP Committee inquiries regarding the provision of a certain type of medical care.
  • Counseled an American regional bank in a sprawling investigation by the House Judiciary Committee.
  • Advised a large federal contractor during an investigation into sexual assault and misconduct by the House Science Committee, including preparing a company executive for a briefing with Committee staff.
  • Prepared several members of President Biden's Cabinet, including the former OMB Director and Acting Secretary of Labor, for transcribed interviews with the Senate Permanent Subcommittee on Investigations regarding the President's health and mental acuity during his time in office.
  • Represented a former senior White House official in a high-profile congressional investigation by the House Foreign Affairs Committee, which included a transcribed interview in the summer of 2024.
  • Advised Marriott on response to all aspects of a high-profile data breach, including preparation for Senate testimony.
  • Advised a securities marketplace participant in connection with all aspects of Senate and House's investigations into the January 2021 Robinhood/GameStop market events, as well as related governmental investigations.

Experience

  • Prepared the head of a large public college system to testify before the House Committee on Education and the Workforce during a high-profile investigation into antisemitism on college campuses.
  • Represented a major G-SIB financial institution throughout a year-long investigation by the Senate Permanent Subcommittee on Investigations, which included preparing company executives to brief Subcommittee staff and to testify at a public hearing before the Subcommittee.
  • Represented one of the nation’s largest associations of community-based health care providers in a high-stakes investigation initiated by the House Committee on Oversight and Government Reform's Subcommittee on Delivering on Government Efficiency, successfully de-escalating the inquiry while protecting the organization's critical care mission and national reputation.
  • Represented large multinational technology company and prepared company witnesses for high-profile public hearings and panel discussions before the US Congress and state legislatures, the European Parliament and Commission, the UK Parliament, the Korean National Assembly, the Australian Parliament, and a Canadian regulator.
  • Advised President Clinton and Secretary of State Clinton in response to subpoenas for depositions issued by the House Committee on Oversight and Government Reform during a high-profile investigation.
  • Represented a major technology company in a year-long congressional antitrust investigation including preparing CEO for high-profile hearing.
  • Prepared Albertsons CEO Vivek Sankaran for testimony before the Senate Judiciary Subcommittee on Competition Policy, Antitrust, and Consumer Rights on November 29, 2022, following the announcement of the proposed merger with Kroger. Valued at $25 billion, the deal was one of the largest announced in 2022, receiving extensive media coverage across the US.
  • Prepared Marcelo Claure, Sprint's Executive Chairman, for several congressional hearings on the proposed $26 billion T-Mobile-Sprint merger and prepared Mr. Claure for his testimony in the lawsuit brought by state attorneys general in SDNY challenging the acquisition.
  • Assisted non-profit hospitals in responding to House Education and Workforce and Senate HELP Committee inquiries regarding the provision of a certain type of medical care.
  • Counseled an American regional bank in a sprawling investigation by the House Judiciary Committee.
  • Advised a large federal contractor during an investigation into sexual assault and misconduct by the House Science Committee, including preparing a company executive for a briefing with Committee staff.
  • Prepared several members of President Biden's Cabinet, including the former OMB Director and Acting Secretary of Labor, for transcribed interviews with the Senate Permanent Subcommittee on Investigations regarding the President's health and mental acuity during his time in office.
  • Represented a former senior White House official in a high-profile congressional investigation by the House Foreign Affairs Committee, which included a transcribed interview in the summer of 2024.
  • Advised Marriott on response to all aspects of a high-profile data breach, including preparation for Senate testimony.
  • Advised a securities marketplace participant in connection with all aspects of Senate and House's investigations into the January 2021 Robinhood/GameStop market events, as well as related governmental investigations.

News and Insights

Publications

Emily Loeb Discusses Congressional Oversight Preparedness in Bloomberg Law

Partner Emily Loeb, co-chair of Jenner & Block's Congressional Investigations Practice, spoke with Bloomberg Law article about how companies can prepare for potential oversight exposure ahead of this fall's midterm elections.

July 7, 2026

Publications

Partner Emily Loeb Quoted in Semafor on Corporate Risk Ahead of Midterm Elections

Partner Emily Loeb was quoted in Semafor in an article examining how House Democrats plan to leverage a potential midterm election majority to pursue oversight investigations into corporations with ties to the Trump administration.

June 9, 2026

Event

Partner Ashley Callen to Speak at Inaugural Federalist Society Legislative Branch Summit

On May 20, Partner Ashley Callen will speak at the Federalist Society's Inaugural Legislative Branch Summit in a plenary session titled "Legislation, Confirmations, and Oversight—Working and Succeeding in a Legislative Legal Role."

May 20, 2026

Publications

Post-Midterm Election Preparation for Government Contractors: A Political Risk Strategy Assessment

Jenner & Block Partners David Robbins and Ashley Callen authored a feature comment in The Government Contractor, the premier trade publication for professionals in the government contracting industry, assessing the political risk landscape facing contractors ahead of the 2026 midterm elections.

April 1, 2026