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The opening days of the 119th U.S. Congress have been marked with congressional action under the Congressional Review Act (CRA) to potentially invalidate regulations that were issued by the Internal Revenue Service (IRS) in the final days of the Biden administration.

On March 14, 2025, President Trump signed legislation disapproving the Environmental Protection Agency’s regulation implementing the Inflation Reduction Act’s tax on methane emissions from the oil and gas sector.

Vinson & Elkins is a sponsor of the 2025 Tax Executives Institute Midyear Conference at the platinum level which will cover the latest in Tax Technology, Financial Reporting, and Tax Leadership & Development.

As it releases executive orders with unprecedented speed, the Trump administration has begun executing its vision for the United States and the world. This article addresses some of the tax-related topics likely to be the focus of the Trump administration in the coming months, including the extension of certain expiring provisions of the Tax Cuts and Jobs Act of 2017 (the “TCJA”), changes to the Inflation Reduction Act of 2022 (the “IRA”), increased tariffs, and changes to enforcement priorities at the Internal Revenue Service (the “IRS”).

For more than twenty years, the North American Free Trade Agreement (“NAFTA”), and later, the United States‑Mexico-Canada Agreement (“USMCA”), have facilitated cross-border trade and investment among the United States, Mexico, and Canada through the elimination of virtually all financial barriers to trade.

The Department of the Treasury (“Treasury”) and the Internal Revenue Service (“IRS”) have released final regulations designating so-called “basis-shifting” transactions among related parties as “transactions of interest.”

The IRS’s new “corporate group mailbox” is a welcome step toward streamlining communications between large business taxpayers and the Independent Office of Appeals.

Attorneys in our appellate, energy regulatory, environmental, tax, securities, and employment practices explored how these landmark rulings affect administrative law and practice and what comes next.

In the final decision of the Supreme Court’s term, the Court again considered the Administrative Procedure Act (“APA”).

In a landmark decision, the Supreme Court has overruled the Chevron doctrine, fundamentally altering the landscape of administrative law and significantly impacting federal tax administration.

The Department of the Treasury (“Treasury”) and the Internal Revenue Service (“IRS”) announced the latest chapter in the long-trumpeted enforcement initiative aimed at large partnerships.

The IRS Independent Office of Appeals has renewed its focus on alternative dispute resolution (ADR).