One Big Beautiful Bill Act signed (Pub. L. 119-21)

On 4 July 2025 President Donald J. Trump signed the One Big Beautiful Bill Act, Pub. L. 119-21, at the White House.¹ The Senate adopted the Senate substitute (reconciliation amendment) 51-50 on 1 July 2025 with Vice President JD Vance casting the tiebreaking vote: of 53 Republican senators, three (Senators Susan Collins (R-Maine), Thom Tillis (R-N.C.) and Rand Paul (R-Ky.)) voted no, leaving 50 Republican yes votes against 50 no votes from the 47-member Democratic caucus (45 Democrats plus the two Democratic-caucusing independents, Sanders and King) augmented by the three Republican defectors.² The House adopted the Senate- amended version 218-214 on 3 July 2025; Representatives Thomas Massie (R-Ky.), Warren Davidson (R-Ohio) and Keith Self (R-Tex.) joined all Democrats in opposition.³ The Act was considered under the reconciliation procedure established by § 310 of the Congressional Budget Act of 1974 (2 U.S.C. § 641), which limits Senate debate and bars a filibuster, pursuant to the reconciliation directives in H. Con. Res. 14.⁴ Principal provisions include making the 2017 Tax Cuts and Jobs Act individual rates, AMT exemption and estate-tax exemption permanent; repealing the Inflation Reduction Act’s clean-energy and electric-vehicle tax credits; modifying the SALT cap to USD 40,000 with a phase-down; appropriating approximately USD 165 billion over the decade for Immigration and Customs Enforcement and Customs and Border Protection; raising the federal debt ceiling by USD 5 trillion; creating new exclusions for tipped income, overtime compensation and certain auto-loan interest; phasing down the Medicaid provider-tax safe harbour; and imposing Medicaid work and eligibility-verification requirements.⁵ The Congressional Budget Office estimated the Act will increase primary deficits by approximately USD 3 to 4 trillion over fiscal years 2025-2034, with the Medicaid provisions accounting for an estimated reduction in federal Medicaid outlays of more than USD 1 trillion and a projected increase in the uninsured population of approximately 10 million by 2034.⁶

1. Tax provisions: the Act makes the individual-rate brackets of the Tax Cuts and Jobs Act of 2017, the AMT exemption and the estate-tax exemption permanent; repeals the Inflation Reduction Act’s § 30D clean-vehicle credit and related energy credits; modifies the SALT cap from USD 10,000 to USD 40,000 with a phase-down for higher-income taxpayers; and creates new exclusions for tipped income, overtime compensation and qualifying auto-loan interest.⁷⁸⁹

2. Medicaid restructuring: the Act phases down the Medicaid provider-tax safe harbour from the existing 6 per cent of net patient revenue (set at 42 C.F.R. § 433.68) to 3.5 per cent by FY 2032 in Medicaid-expansion states; introduces community-engagement (work) requirements and enhanced eligibility-verification procedures for the able-bodied adult expansion population under § 1902 of the Social Security Act; and reduces federal matching for certain categories.¹⁰¹¹ Coverage churn increases under tighter procedural requirements, raising state administrative costs and reducing continuous enrollment.

3. Border and debt-limit provisions: the Act appropriates approximately USD 165 billion over the decade for ICE and CBP detention, removal and enforcement operations, and raises the federal debt ceiling under 31 U.S.C. § 3101 by USD 5 trillion.¹²¹³ The Senate Parliamentarian Elizabeth MacDonough ruled on multiple Byrd-Rule challenges under 2 U.S.C. § 644, including striking certain provisions and retaining others (such as the Sen. Lisa Murkowski (R-Alaska)-secured whaling-captains tax-deduction provision).¹⁴¹⁵