Almost certainly he was there looking for Canadians purchasing firearms so they can try to catch them at the border.
The upcoming AR-15 ban is going to create a huge black market for ARs. Lawful gun owners have their AR registered, so the government knows who all already has them. A portion of these lawful gun owners are going to say, this fucking sucks, but comply because the laws are so retarded they can buy another similar gun that is non-restricted, but just different enough it isn't an "AR-15". Another portion of these lawful gun owners are going to say, fuck these cunts, I want an AR but I'm not registering it this time because they will just continue to expand the definition.
They can watch on their side of the border. On this side of the border, foreign agents conducting surveillance is a violation of the Espionage Act. "The law prohibits “obtaining information, recording pictures, or copying descriptions of any information relating to the national defense with intent or reason to believe that the information may be used for the injury of the United States or to the advantage of any foreign nation,”"
Justice in a state with no regulations. Cadians couldn't legally buy firearms at a gunshow unless there were residents of the US
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