A full all out battle is taking place over tailpipe emissions in California with the current administration. The State of California, boast a population of 39.56 million people and is 12% percent of the total U.S. population, as of 2018. The fight to control pollution, is one that the State has been fighting for years and is now fighting to maintain their current policy and authority to set their own emissions standards. Some Automakers agree with taking this authority away and other Automakers agree that California should retain these. This has increased the "at Odds" to another level. Read the latest on this here. The Hill's Justine Coleman, November 18, 2019: California To Stop Buying From Automakers That Backed Trump In The Emissions Battle.