The places where the law is lax don't check many, or any, credentials. A 13 year old can buy a gun from a gun show with cash and no information. When the state doesn't care enough to have strict laws, the people making money sure don't, either.
I've already linked to the Wikipedia article. A quick search brings up the article as well as other information. I'm not going to hold your hand and feed you and dress you, so why would I read for you?
Also, this tweet proves that you have no interest in educating yourself 
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Wikipedia?
Thanks. Twitter will use this to make your timeline better. UndoUndo
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