The Supreme Court on Monday declined to take up a business-backed appeal that could make it easier to challenge federal regulations, acting in a dispute related to California’s nation-leading standards for vehicle emissions. The justices last Friday agreed to hear an appeal filed by fuel producers who object to a waiver granted to California in 2022 by the Environmental Protection Agency during Joe Biden’s presidency. The waiver allows California to set more stringent emissions limits than the national standard. A federal appeals court in Washington ruled that the companies lacked the right to sue because they produced no evidence that they would be affected by the waiver, which directly affects vehicle manufacturers. Ford, Honda, Volkswagen and other major automakers already are meeting the California emission standards, the Biden administration noted in court papers. But the fuel producers told the high court that the appellate decision, if left in place, would “imperil future challenges to administrative action.”Related Articles Business | Honda recalls nearly 206,000 SUVs to fix fuel filler tubes that can leak gas Business | US to add blind spot warnings, pedestrian detection to vehicle crash ratings Business | Ford to pay up to $165 million to US government for moving too slowly on recall Business | US launches Honda probe, fearing engines on 1.4 million vehicles might fail Business | VW seeks unprecedented plant closings as auto crisis deepens