Apparently Canada is giving away a bit much in the civil liberties department and the US would like to minimize that:
“Also, Canadian laws and regulations intended to protect Canadian citizens and landed immigrants from government intrusion sometimes limit the depth of investigations.”
Them laws n’ stuff’re gettin’ in the way of them laws that we’re a tryin’ a protect. That’s right cowboy, we don’t need any of those hooligans smokin’ their reefers and causin’ a ruckus. It’s past noon, lets grab us some beer and some guns and go out and defend our right to have those guns.