( February 4, 2026, 7:43 AM EST) -- WASHINGTON, D.C. — Four environmental groups contend in a lawsuit filed in a District of Columbia federal court that President Donald J. Trump exceeded lawful authority with the passage of a proclamation that cited a previously unused Clean Air Act (CAA) provision to exempt 40 commercial sterilizers “that use cancer-causing pollutant ethylene oxide to sterilize goods” from following a U.S. Environmental Protection Agency rule that boosts emissions regulations....