Marijuana initiative could make or break Obama in Colorado

DENVER (Reuters) – Throughout his presidency, Barack Obama hasn't exactly been a friend to marijuana users. Sure, he has acknowledged smoking pot as a young man, but he has disappointed marijuana advocates by opposing its legalization, regulation and taxation like alcohol. And the Justice Department's occasional crackdown under his administration on medical marijuana dispensaries, which 17 states and the District of Columbia allow, has angered others. …