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Apr 20, 2026 Plaintiffs and courts advanced multiple lawsuits challenging Trump administration actions and records practices Tier 1 · Primary Institutions and Governance
These filings and rulings showed courts continuing to process challenges to executive conduct, preserving institutional channels for review and disclosure.
Supporting reports
- Climate groups file lawsuit against US government over BP project approval — On the 16th anniversary of the Deepwater Horizon disaster, a coalition of five environmental groups filed a lawsuit against the Trump administration.
- Case update — Democracy Forward Foundation v. U.S. Department of Justice (D.D.C.) 1:26-cv-01206 — Plaintiff filed an amended complaint introducing an additional claim alleging that the DOJ violated the FOIA by failing to grant expedited processing for the requests made in this matter, citing exceptional media
- Case update — DSCC v. Trump (D.D.C.) 1:26-cv-01114 — State Attorneys General filed a motion for leave to intervene as Defendants and a memorandum in support of their motion.
Sep 19, 2025 Republicans in Congress proposed delaying the PFAS firefighting foam ban and cutting cleanup funds Corroborated Institutions and Governance
The provisions would weaken existing environmental safeguards through defense legislation and reduce accountability for contamination.
Supporting reports
- Republicans propose legislation to delay PFAS ban in military firefighting foam — Republicans in Congress have introduced provisions in the National Defense Authorization Act (NDAA) that would delay the ban on PFAS-laden firefighting foam, which is set to take effect next year.
Jun 20, 2025 The Supreme Court allowed a challenge to California's vehicle emission waiver to proceed Tier 1 · Primary Institutions and Governance
The decision reopened litigation over a long-standing state regulatory power, affecting the balance between federal and state environmental authority.
Supporting reports
- Supreme Court Allows Challenge to California's Emission Limits — The U.S.
- Supreme Court releases opinion in Diamond Alternative Energy, LLC v. EPA (24-7) — The Supreme Court released an official slip opinion in Diamond Alternative Energy, LLC v.
May 29, 2025 The Supreme Court issued its opinion in Seven County Infrastructure Coalition v. Eagle County Tier 1 · Primary Institutions and Governance
The opinion set binding national law on environmental review and agency obligations, affecting future federal project approvals.
Supporting reports
- Supreme Court releases opinion in Seven County Infrastructure Coalition v. Eagle County (23-975) — The Supreme Court released an official slip opinion in Seven County Infrastructure Coalition v.
- US Supreme Court Ruling on Utah Railway Project — On May 29, 2025, the US Supreme Court issued an 8-0 ruling in favor of a multibillion-dollar oil railway expansion project in Utah, overturning a lower court's decision that had halted the project.