Last week, legislators in the Senate Committee on Health and Human Services heard compelling testimony on Assembly Bill 351. This modest and sensible bill would exempt Nevada’s medical marijuana patients from the state’s unscientific limit on how much THC they can have in their systems while driving. For medical marijuana patients – who can legally consume marijuana – prohibiting small amounts of THC from showing up in blood tests is patently unfair. Active THC can remain in the bloodstream for days…