I got a call last week about this absolutely tragic story in Florida, which is as good an example of the senseless nature of our nation’s marijuana laws as any I have ever seen. John Haring, 45, is a quadriplegic who suffers daily from chronic pain, arthritis, spasm attacks, and depression. He uses marijuana to treat his condition, and after two marijuana arrests in two years, he’s now heading to jail for 90 days, after which he’ll be forced to undergo three years of probation and drug testing. If…