Comprehensive guide to Major Questions Doctrine cases, courts, and legal analysis.
Friends of the Everglades, Inc. v. Secretary of the U.S. Department of Homeland Security, decided by Eleventh Circuit on April 21, 2026, resulted in a defendant win outcome. The Eleventh Circuit affir...
State of Texas v. EPA, decided by Fifth Circuit on March 13, 2026, resulted in a mixed outcome. The Fifth Circuit reviewed the EPA's "Good Neighbor" provision under the Clean Air Act, which requires s...
State of Texas v. EPA, decided by Fifth Circuit on September 22, 2025, resulted in a defendant win outcome. The Fifth Circuit reviewed the EPA's authority to regulate greenhouse gas emissions under th...
Donald Johnson v. United States Congress, decided by Eleventh Circuit on August 19, 2025, resulted in a plaintiff win outcome. The Eleventh Circuit addressed whether the "major questions doctrine" app...
Trump v. CASA, Inc., decided by Supreme Court of the United States on June 27, 2025, resulted in a defendant win outcome. The Supreme Court considered whether the Biden administration's "interim final...
Deep South v. EPA, decided by Fifth Circuit on May 21, 2025, resulted in a defendant win outcome. The Fifth Circuit reviewed the EPA's authority to regulate greenhouse gas emissions from power plants ...
State of Texas v. EPA, decided by Fifth Circuit on May 16, 2025, resulted in a defendant win outcome. The Fifth Circuit reviewed the EPA's authority to regulate greenhouse gas emissions under the Clea...
State of Texas v. EPA, decided by Fifth Circuit on March 25, 2025, resulted in a defendant win outcome. The Fifth Circuit reviewed the EPA's authority to regulate greenhouse gas emissions under the Cl...
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