A U.S. judge in Washington late on Wednesday blocked the U.S. Environmental Protection Agency (EPA), the U.S. environmental regulator, from sending four waivers to the Republican-controlled Congress for potential repeal. The waivers grant California authority to set its own emissions standards for cars, trucks, and lawn and garden equipment. The decision comes as the Trump administration pursues multiple efforts to strip California of its ability to require cleaner vehicles and more electric vehicles.