On April 15, 2025, EPA filed a notice of appeal of the preliminary injunction issued in Climate United Fund (No. 25-cv-698), which prevents EPA and Citibank from terminating and freezing Greenhouse Gas Reduction Fund grants while the case is pending. On April 16, the court issued a partial administrative stay of the district court’s preliminary injunction. On September 2, the court issued its decision, setting aside the district court’s preliminary injunction. On December 17, the court granted the plaintiffs’ petition for a rehearing en banc and vacated the court’s September 2 decision. The April 16 partial administrative stay remains in effect. The federal government filed its brief on January 9, 2026. On January 16, 23 Republican state attorneys general filed an amicus brief in support of the federal government. The plaintiffs filed their brief on February 2. On February 9, several members of Congress filed an amicus brief in support of the plaintiffs. Oral argument was held on February 24. On March 9, the court requested supplemental briefing from the parties, which all parties submitted on March 19.