News that Minneapolis monster Robin Westman worked at a pot shop until just two weeks ago should give pause to those in the White House reportedly pushing President Donald Trump to take a landmark step toward federal approval of marijuana use. Westman, 23, was apparently fired from Rise, an area cannabis dispensary, on Aug. 16 over chronic tardiness and absenteeism. If you know anything at all about the culture of this biz, that tells you the odds are awfully good that he was using, too. And medical research in recent years keeps producing fresh evidence strongly suggesting that heavy marijuana...