Trump to bar California from setting vehicle emission rules: sources

The Trump administration will announce as early as Wednesday it is revoking California’s authority to set its own greenhouse gas and vehicle fuel efficiency standards and barring all states from setting such rules, two auto industry officials said on Tuesday. The move is sure to spark legal challenges over issues including states' rights and climate change that administration officials say could ultimately be decided by the U.S. Supreme Court. Trump met with senior officials last Thursday