Late last year, U.S. Atty. Gen. Eric H. Holder Jr. affirmed the Obama administration's long-standing policy of taking a hands-off approach to states that had legalized medical marijuana, saying federal resources wouldn't be expended on enforcement actions as long as purveyors obeyed state law. On Tuesday, Los Angeles got a taste of the current interpretation of that policy — which is that our dispensaries are out of bounds. Federal officials started their first major operation in L.A. by raiding dispensaries. (See also: Marijuana: A failure to regulate, but not by dispensaries)