Environmental Protection Agency Administrator Michael Regan discusses elements of a coordinated response of federal, state and city agencies, that he hopes will help deal with the city's long-standing water problems, during a news briefing, Sept. 7, 2022, in Jackson, Miss. The Biden administration is proposing lower limits for a deadly air pollutant, saying tougher standards for soot from tailpipes, smokestacks and wildfires could prevent thousands of premature deaths a year. (AP Photo/Rogelio V. Solis, File)