Cameron Reagan, 20, a grandson of former President Ronald Reagan, with burglary, grand theft and petty larceny, Wednesday, in Los Angeles. He pleaded not guilty. Reagan and another man were arrested in November when they were seen trying to open doors of parked cars. The other man was allegedly carrying items which had been stolen from several nearby cars. Reagan was on probation at the time for a misdemeanor offense -- scratching his name in a store window.