Sen. Barack Obama, D-Ill., could welcome them in style if he didn't find himself explaining what looks like his second foreign-policy flub in as many weeks.
Asked about whether he'd consider nuclear weapons to take out terrorists in Pakistan, Obama said, "I think it would be a profound mistake for us to use nuclear weapons in any circumstance."
He paused before adding (and can't you just see his mind working here?), "involving civilians." ("Scratch that"? Sorry, do-overs are for the state senate.)
Even a bad candidate could have pounced on this one (recall Obama's boast of having the best foreign-policy judgment in the field?), and Sen. Hillary Rodham Clinton, D-N.Y., is the consummate pro.
"Presidents should be very careful at all times in discussing the use or non-use of nuclear weapons," she told reporters yesterday, per ABC's Jake Tapper.