SACRAMENTO, Calif. (AP) – California Gov. Jerry Brown has vetoed a bill that would have let bars in some cities serve alcohol until 4 a.m. He rejected the legislation Friday because he says it would cause more drunken driving. California lets bars serve alcohol until 2 a.m. Brown says the bill would have added two hours of early morning “mayhem.” It would have allowed extended hours in nine California cities, including Los Angeles and San Francisco. Brown also vetoed a bill that would have opened the door for parents to give edible marijuana to their children on school grounds to treat medical conditions if permitted by a school board. Brown said in his veto message that he’s concerned about exposing youth to marijuana and believes the bill is too broad.