Fly Kerry here, fly McCain there, fly Obama and Clinton everywhere... pretty soon we are talking about some serious "seditioning" going on.
Be a shame if the US pulled some (cough) random (cough) passports because of security concerns. On a temporary basis, of course...
What? Have an legitimate justification?
Didn't care threaten to pull passports of any American athlete that wanted to go to the 1980 Moscow Summer Olympics?
(Carter in a tiz over the Soviet invasion of Afghanistan.)