Will you please stop this thinking and making sense! I've warned you before, I may have to...take action. :-)
If their people have no physical presence at the terminal facilities, nor are foreigners involved in any of the operation they might hire, e.g. our stevadores do the work, and the port security is controled by the state/city/port authorities, and the US customs and US Coast Guard are resposible for the container inspections (that is a known weak area as some have brought up, simply not sufficient tools and personel to inspect all incoming containers, a rather shabby 5% often being thrown out), it would appear DPW has little control over anything in the reality of things.
But But they'll be writing the paychecks! We can't have that!