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Barney Frank joins local marijuana business

Former US Represenative Barney Frank supported marijuana legalization when he was a state representative in the early 1970s. –John Tlumacki/Globe Staff/File

When it comes to marijuana, Barney Frank and Bill Weld were both decades ahead of the political curve.

Frank, the longtime former Massachusetts congressman, supported legalization when he was a state representative in the early 1970s. Weld, for his part, backed medical marijuana as the governor of Massachusetts in the early 1990s. (Neither proposal went anywhere.)

Now, it’s Frank who will follow in Weld’s footsteps by joining a marijuana company. But while Weld last year joined the board of a slick conglomerate with national ambitions, Frank is linking up with a decidedly less corporate operation: Beantown Greentown, a local group of underground growers, marketers, and event organizers — you may remember their 100-foot joint stunt — trying to go legit.