Marijuana advocates have come to lobby Washington before, often to argue for more lenient treatment under federal law. But on Thursday, buoyed by a flurry of state decisions that have expanded the legal use of marijuana, the cannabis crowd came less as social activists than as entrepreneurs, asking Congress to remove some of the obstacles that stand in the way of their fledgling businesses.
If their aims seemed mundane, even technical, it was a measure of how far the marijuana movement has come in just a few years. Medical marijuana is now legal in 20 states and the District of Columbia. Last year, Colorado and Washington state made marijuana fully legal for adults, and similar efforts are gathering steam elsewhere in the country. Colorado collected about $2 million in marijuana taxes in January, the first month that sales for recreational use were permitted — a detail that was mentioned often Thursday.