No, it can't.
GO JESSE!
OK, I know I risk being flamed into oblivion, but am I the only one who sees at least SOME value to having a former US president running the UN? Sure he's on the nominal "other side" of the partisan divide, but in the larger picture he's an American, and more likely to be pro-US in his administration.+ No? I think it's for this very reason that he will never ever become Sec. General anyway.