Gov. Jay Inslee of Washington, Gov. Andrew M. Cuomo of New York and Gov. Jerry Brown of California, all Democrats, said they were beginning a separate alliance of states committed to upholding the Paris accord.
Automakers like Ford Motor and General Motors would still need to build cars that meet stringent fuel economy and emissions standards in the European Union, Japan and even China, not to mention California.
Jackie Biskupski, the mayor of Salt Lake City and a Democrat, said her administration had recently brokered an agreement with the local utility to power the city with 100 percent renewable energy by 2032.