HFO-1234yf Proposed for Vehicle AC Retrofit Under SNAP Program

EPA published a supplemental notice of proposed rulemaking under the Significant New Alternatives Policy (SNAP) program proposing to list HFO-1234yf as an acceptable substitute for vehicle air conditioning retrofit applications. The proposal would expand the approved uses of this low-global-warming-potential refrigerant beyond its current limited approvals. The comment period closes on May 6, 2026.

EPA Determination of Attainment for Phoenix-Mesa Under 2015 Ozone Standards

The EPA issued a correction to its earlier determination that the Phoenix-Mesa nonattainment area in Arizona has attained the 2015 Ozone National Ambient Air Quality Standards by the applicable attainment date, notwithstanding international emissions. The determination was made under Clean Air Act provisions addressing international emissions contributions.

Petroleum Supply Reporting System Extension

EIA published a notice seeking public comment on a three-year extension of its Petroleum Supply Reporting System (PSRS), OMB Control Number 1905-0165. The PSRS consists of seven weekly surveys, eight monthly surveys, and two annual surveys covering crude oil, petroleum products, and biofuels data from operators. Comments are due May 4, 2026.

Medicare Advantage and Part D Contract Year 2027 Policy Changes

CMS published a final rule implementing policy and technical changes to Medicare Advantage, Medicare Prescription Drug Benefit, and Medicare Cost Plan programs for Contract Year 2027 and certain 2026 provisions. The rule addresses payment updates, Part D drug pricing, beneficiary protections, and program integrity measures across 42 CFR 422 and 423.

FY 2027 Hospice Wage Index and Payment Rate Update

CMS published a proposed rule updating Medicare hospice payment rates and wage index values for FY 2027. The rule also addresses Hospice Quality Reporting Program requirements. Public comments are being accepted through June 1, 2026. Hospice providers participating in Medicare should review the proposed payment changes and submit comments.

IRF Prospective Payment System FY 2027 and Quality Reporting Updates

CMS published a proposed rule on April 6, 2026, updating the Inpatient Rehabilitation Facility (IRF) Prospective Payment System for Federal Fiscal Year 2027. The rule also proposes updates to the IRF Quality Reporting Program. CMS is seeking public comments on the payment rate adjustments and quality measure modifications before finalizing the rule.

Vidal inmate appeal Second Circuit April

Vidal inmate appeal Second Circuit April

DOJ NSD Enhances Voluntary Disclosure for Export, Sanctions

The Department of Justice's National Security Division issued guidance on March 30, 2026, extending its Unified Corporate Enforcement Policy to national security violations involving export controls, sanctions, and related matters under the International Emergency Economic Powers Act. The policy establishes a clear pathway for companies to receive cooperation credit through voluntary self-disclosure, full cooperation, and remediation. DOJ signals increased enforcement activity in this space.

Trump raises Section 232 tariffs to 50%, UK rates 25%

Trump raises Section 232 tariffs to 50%, UK rates 25%

Supreme Court IEEPA Ruling on Presidential Tariff Authority

The Supreme Court ruled 6-3 that the International Emergency Economic Powers Act (IEEPA) does not authorize the President to impose tariffs, holding that tariffs constitute taxation reserved for Congress under Article I, Section 8 of the Constitution. The decision in Learning Resources, Inc. v. Trump applies the major questions doctrine, requiring clear congressional authorization for executive actions with vast economic significance exceeding $150 billion in tariff revenue.