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At the Milwaukee airport on Tuesday, Montel Williams was found with a marijuana pipe as he passed through a security checkpoint. Williams, who is an advocate for medical marijuana, says that he uses it to relieve pain from multiple sclerosis.

Williams paid the $484 fine and was allowed to continue his travel. He's been a medical-marijuana advocate since he was stopped at a Detroit airport for drug paraphernalia in 2003.

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Read the rest of this story at the Huffington Post.