On 9 March 2024, the Biden Administration released its proposed budget for fiscal year 2025, and the Treasury Department released its General Explanations of the Administration’s Fiscal Year 2025 Budget Proposals, commonly known as the “Greenbook.” Many of the proposals in this year’s Greenbook appeared in earlier years, but a few proposals are new or modified. Due to the divided Congress and competing political priorities during a general election year, there is little chance that any of the Greenbook proposals will be passed into law in 2024. However, the Greenbook illustrates the consistency of the President’s tax policy objectives during his first term and maps out priorities for a possible second term.

On Thursday, 7 March 2024, the Tax Subcommittee of the House Committee on Ways and Means held a hearing on the Organization for Economic Co-operation and Development (OECD) inclusive framework’s Pillar One project. The hearing marked Congress’ first public inquiry dedicated solely to Pillar One since the release of the draft Multilateral Convention to Implement Amount A of Pillar One (MLC) and the final Amount B report. The same Subcommittee examined both Pillar One and Pillar Two in a July 2023 hearing that featured then-Deputy Assistant Secretary for International Tax Affairs Michael Plowgian.

The United States tax treaty with Chile has finally been approved by the Senate, over a decade after its original signature on 4 February 2010.
On 22 June 2023, the Senate voted 95-2 to pass the resolution of advice and consent to ratification of the Convention Between the Government of the United States of America and the Government of the Republic of Chile for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income and Capital. The treaty now heads to the President for official ratification.