Yes it does. But it does not include being up to date on every prosecution of a cop, soldier, BP agent, marshall, FBI agent gone bad in this land.
I could walk across the border, in an embarrassing number of areas, and haul in whatever my fancy decides.
Once again, the law abiding will use ports of entry and passports. The elements who wish to steal across, while engaged in illegal enterprise, will cross in an unlaw abiding manner.
"Suitcase" nukes? Biological agents? Chemical agents? Illegal "guest" workers, with criminal backgrounds? Who knows?
Our Federal government sure as Hell doesn't.