Some questions to think about:
Would John have played the White House? And if he did, would he have sung "Michelle"? (Oh dear God.)
Why are "Hey Jude" singalongs encouraged? How many na-na-na-nas must be sung before they are forever banned?
Instead of singing "Michelle" (oh dear God), couldn't Sir Paul have played something unexpected, like, "Why don't we do it in the road"?
What happens during a drum solo at a White House gig? Policy discussions? Oil spill debates?