He's tanned, He's Rested, He's Ready. Vote Clinton 2004.
(From a minimal butterfly world in which the 22nd and 25th Amendments have slightly different wording. Instead of denying any President more than two terms or ten years in the White House, the amendments prohibit any President from serving more than two terms or ten terms consecutively. Therefore a former President becomes eligible for the Presidency after a four year interim. This change in wording doesn't affect things too much. Eisenhower has no interest in running in 1964, Nixon is far too disgraced to run in 1980, Reagan's Alzheimer's disease precludes a Reagan 1996 campaign. Bill Clinton is the first former President who has an opportunity to take advantage of the loophole. After much convincing former President Clinton decided to enter the 2004 campaign. Yes I know I'm torturing butterflies here, and the probability of this happening may well be ASB. But still Bill Clinton vs. George W. Bush is a scenario I've been thinking about, regardless of the improbability involved.)
I have to say I love it and I don't think that's going to butterfly things a lot in any case. It's more or less a matter of one person somewhere in the US government writing up a line different, and no one noticing the loophole until much later. I don't see why that couldn't happen without too much of an impact on history.
And I do know that a single thing going different is going to lead to everything being different and so on and so forth but still this would be a timeline I for one would be very much interested in reading, whether you could consider it ASB or not.
This would or could btw make Clinton the second US president ever to serve non-consecutive terms, which would make ole' Bill much more noteworthy in the grand scheme of things than he ever was OTL (where he quite frankly, apart from the sex scandal, didn't make much noise, so to speak).