Arizona Republic:  “Sen. Kimberly Yee has become the go-to legislator for bills involving Arizona’s medical-marijuana law.  The Phoenix Republican is the primary sponsor of three measures this session that would tighten what members in the law-enforcement community have identified as loopholes in the 2010 voter-mandated law as well as pave the way for university researchers to study the effects of medical marijuana. . . . We recently spoke with Yee about her work involving the medical-marijuana act. Here’s an edited excerpt: