Gov. John Carney and 23 other governors of the U.S. Climate Alliance on issued a joint statement July 9 announcing the Nation’s Clean Cars Promise to protect citizens from vehicle pollution and to fight climate change."We, the undersigned 24 governors — a bipartisan coalition representing 52% of the U.S. population and 57% of the economy — stand together in calling for one strong, national clean car standard and support preserving state authority to protect our [...]