The Bay Citizen:  “In an ominous portent of the clash between federal and state law over medical marijuana, the IRS is auditing the Bay Area’s largest medical pot dispensary, Harborside Health Center . . . . a Nov. 15 letter that Harborside sent to Sen. Barbara Boxer asking for tweaks in tax laws that can result in near-crippling taxes on pot dispensaries . . . . Harborside has exploded in popularity with 58,000 members . . . . The dispensary brings in around $20 million in revenue each year”