Excerpt: “U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin announced the agency is tackling the troubled ‘Good Neighbor Plan.’ EPA announced its commitment to advance cooperative federalism and work with states on State Implementation Plans (SIPs) that were nearly universally rejected by the Biden-Harris Administration. … On March 15, 2023, EPA finalized its ‘Good Neighbor Plan’ rule for 23 states to address interstate transport of air pollution which impacts National Ambient Air Quality Standards (NAAQS). In doing so, the Biden-Harris Administration expanded the federal rules to more states and sectors beyond this program’s traditional focus on power plants and subsequently rejected 19 SIPs and partially rejected 2 SIPs. This heavy-handed, one-size-fits-all, federal mandate was emblematic of a larger regulatory onslaught that guided agency action and rules. In June 2024, the U.S. Supreme Court stayed the rule, finding that it was likely unreasonable and irrational in key respects.”