This quote was from the above referenced article:
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Rosenfeld's attorney, Christopher Sharp, said refusing to seat his client on the airliner was like kicking a diabetic off the flight for carrying hypodermic needles and insulin.
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Hmmm....I believe we've seen almost that very thing (the passenger was not kicked off, but was clearly treated in an inappropriate fashion because of their insulin syringes)
http://www.flyertalk.com/forum/Forum21/HTML/004389.html
To quote from the AP article again:
A Delta spokeswoman said she was unaware that any Americans were permitted to smoke marijuana.
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``Under federal law, marijuana is an illegal drug, and I'm not aware of any medical use exception of the nature he claims or of any private citizen having a right to possess it in the United States,'' Katie Connell said.
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Ignorance is clearly more dangerous than any pair of tweezers will ever be.