False analogy. Foreign airlines do not "operate at" US airport terminals.
To be an analgous equivalent, we would have to allow Dubai to run air cargo operations into and out of New York, New Jersey, Philly, Baltimore, Miami, New Orleans, and two military bases in Texas.
In point of fact, we don't allow this. For very good reasons.
The fact that we've head our head up our rear ends for years is NOT a justification for leaving it there.
Actually you also have a false analogy. Since security is run by the Coast Guard(or overseen by them) then it would be exactly like TSA.
Nothing would change except that essentiaaly they would be the one's "managing" the gate.. except wait.. it's run by a union.. so not a single employee would change.
Interesting.