Who else?
"And I would've gotten away with it if it weren't for you kids!"
Ruh-Roh!
"If nukes were being smuggled into the US or Europe or Russia, or China, some would have been discovered."
Really? By whom? Homeland Security? The CIA? FBI? The Border Patrol? Port security?
The whole country is a sieve.
Homeland Security? I don't believe that is anything more than a program title and a figurehead director. The night people, cops and crooks, keep watch over this country. Where could the nukes be hidden so a junky wouldn't find one while looking for loot and try to pawn it for a fix? Somebody is always looking someplace: there's hardly a square foot of America that isn't being watched by somebody or other on a regular basis.
Who else?
"And I would've gotten away with it if it weren't for you kids!"
Ruh-Roh!