After 9/11 I was involved in radiation survey of buildings including embassies and temples, for secreted nuclear materials. We were aware of suitcase nukes capable of being smuggled in via diplomatic bags... As you are probably aware, the US has been blackmailed for decades over the threat of major cities being nuked. They use the carrot and stick on Congress of 'give us funds and we'll reward you personally, and if you oppose us we will blow up a major city'. Now, the border so open for smuggling renders it impossible to stop things being brought in and we don't even scan diplo bags for radiation anymore. We do have radiation scanners for cargo trucks and airline shipments and we have truck-mounted scanners that can drive past street vehicles and check them.

After 9/11 I was involved in radiation survey of buildings including embassies and temples, for secreted nuclear materials. We were aware of suitcase nukes capable of being smuggled in via diplomatic bags... As you are probably aware, the US has been blackmailed for decades over the threat of major cities being nukes. They use the carrot and stick on Congress of 'give us funds and we'll reward you personally, and if you oppose us we will blow up a major city'.