In that case the DoJ and ATF have spent hundreds of millions of dollars trying to stop people from engaging in legal acts of commerce. They should be prosecuted for that then.
This falls into the same level of absurdity as George Costanza on "Seinfeld" whining about being fired from his job for having sex in the office with the cleaning lady...
"Was that wrong? Should I not have done that? I tell you, I gotta plead ignorence on this thing, because if anyone had said anything to me at all when I first started here that that sort of thing is frowned upon... you know, cause I've worked in a lot of offices, and I tell you, people do that all the time."