MeghanGreenfield

On April 29, 2026, the US Supreme Court issued a unanimous opinion in First Choice Women’s Resource Centers, Inc. v. Davenport, No. 24-781, holding that a subpoena demanding information about a nonprofit’s donors injured the organization by burdening its First Amendment right to freedom of association. The Supreme Court held that the mere issuance of the subpoena, even though it had not yet been enforced by a court, injured First Choice for purposes of Article III standing. The Court reasoned th

On February 23, 2026, the US Supreme Court granted certiorari in Board of County Commissioners of Boulder County v. Suncor Energy (U.S.A.) Inc., No. 25-170, agreeing to hear a case that has drawn the attention of the energy industry, environmental advocates, and the federal government alike. This appeal arises from a 2018 Colorado state court lawsuit brought by the City of Boulder and Boulder County (together, Boulder) against Suncor Energy and ExxonMobil, seeking damages for alleged injuries re

Partner Meghan Greenfield, was quoted in NBC News, “EPA reverses long-standing climate change finding, stripping its own ability to regulate emissions,” and by Reuters in “Trump's repeal of climate rule opens a 'new front' for litigation,” and in a BBC News article “Trump revokes landmark ruling that greenhouse gases endanger public health,” explaining the impact of the agency’s decision to repeal the “endangerment finding,” the legal and scientific rule that has supported federal actions to cur

Partner Meghan Greenfield was recently quoted in a Law360 article, where she shared insights on how federal agencies with environmental responsibilities are using AI tools. The use of AI in agency work is facing uncertainty as attorneys say information about exactly why, how, and when AI tools are being used has been hard to obtain, leaving attorneys to question the tools effectiveness and shortcomings. The Environmental Protection Agency (EPA), the Department of the Interior and the Department

Partner Meghan Greenfield will speak on a panel titled “Challenges of the Changing Regulatory Space” at the 2025 Annual Air Conference on October 21.

Partner Meghan Greenfield was quoted in two E&E News articles, “EPA seeks to limit its power to curb climate pollution,” and “EPA’s endangerment gambit could cause rules to spring back;” a Reuters article, “US reversal on key climate finding spells uncertainty for business;” and a CBC article, “Trump's EPA wants to reverse course on dangers of GHG emissions, disrupting industries, climate goals,” analyzing the EPA's proposed changes to greenhouse gas regulations under the Trump Administration.

Partner Meghan Greenfield was quoted in an Associated Press article discussing the Environmental Protection Agency’s (EPA) proposal to repeal regulations that limit greenhouse gas emissions from power plants fueled by coal and natural gas.

Partner Meghan Greenfield will participate in a panel at the Industrial Environmental Association’s 41st Annual Environmental Training Symposium & Conference on June 5. Meghan’s panel, titled “Federal Environmental Regulation Under the Current Administration: A Perspective from Washington, DC,” will provide an overview of regulatory and policy changes affecting federal agencies, along with her insights on what to expect moving forward.  

On April 8th and 9th, President Trump issued five executive orders, a presidential proclamation, and a presidential memorandum that directly impact the energy industry.

Shortly after taking office, President Trump announced sweeping tariffs on several trading partners, including Canada, Mexico, and China, with plans to also impose tariffs on the European Union. This client alert unpacks those developments and the legal challenges they are likely to face.

The Supreme Court ruled in favor of the City and County of San Francisco in a case against the US Environmental Protection Agency involving the scope of the Clean Water Act. See City & Cty. of San Francisco v. Environmental Protection Agency, No. 23-753 (Mar. 4, 2025). At issue was the Clean Water Act’s discharge permitting program. Specifically, the issue was whether the Clean Water Act allows permits to include limits that are based on the quality of the receiving water, or whether all permit

Jenner & Block is pleased to announce that Meghan Greenfield has joined the firm as a partner in the Washington, DC office. Meghan brings a wealth of knowledge from her role as Senior Counsel for Litigation in the Office of General Counsel at the Environmental Protection Agency (EPA), where she oversaw major litigation and regulatory matters related to the Clean Air Act, Clean Water Act, waste and toxic chemicals laws, and energy transition policies.