A week ago, the Bureau of Alcohol, Tobacco, Firearms, and Explosives issued a letter that said all medical marijuana card holders may not own a gun. To quote, “…if you are aware that the potential transferee is in possession of a card authorizing the possession and use of marijuana under State law, then you have “reasonable cause to believe” that the person is an unlawful user of a controlled substance. As such, you may not transfer firearms or ammunition to the person… .”

Of course, this is unlikely to stop country folk from possessing a gun but it will give the legal system one more hammer to hit a grower with.

UPDATE: The Redding Searchlight has a good article on this.