That's no different than the ridiculous policies of the Canadian government in regards to border crossings. I was on the way to Toronto and entered Canada through the Detroit/Windsor bridge. I was helping the Deja Vu in Toronto add an adult bookstore and had already made several trips back and forth. I had a spiked bracelet on that I had bought at a club in Toronto, and I had several other bracelets in my bag.
I was asked at the entrance whether I had other spiked jewelry, and I answered yes. They had me pull over and searched my truck, and took about 5 pieces of spiked jewelry, all of which had been purchased at a goth club in Toronto. I was then advised that it was illegal to bring the jewelry into Canada, even though it was purchased there. They were originally going to fine me something like $200 for each piece, but instead they seized all the jewelry (about $250 worth) and turned me back to the US. I was told I couldn't enter Canada again without a Minister's waiver. Now that is bullshit
