Good news for Republicans who want to legalize marijuana: Taxing pot is A-OK with Grover Norquist, the keeper of the antitax pledge that hundreds of GOP lawmakers have signed.

Last month, Norquist joined Reps. Earl Blumenauer, D-Ore., and Dana Rohrabacher, R-Calif., two of Congress's most outspoken drug-policy reformers, to push a plan that would allow marijuana-related businesses to write off their business expenses. The federal tax code considers state-approved dispensaries drug traffickers, even in the 20-plus states that have medical marijuana or full legalization. Norquist, Blumenauer, and Rohrabacher want to put an end to that.