Assuming the 22nd is ratified in 1951 as per OTL, when would be a plausible time for its repeal? The "Great 89th" as LBJ called it, between 1964-6? Must be done between 1965 and 1985.
??? Congress to overturn it ??? 1) Congress can't. Not by itself. They can propose an new amendment, but then it has to go to the various states, which have to ratify it with a 2/3 or 3/4 majority (I forget the number, but it's large)Nixon talked of a third term. So you could have him manage, with his popularity and no Watergate, to get Congress to overturn it. America is afraid, Nixon gives them some stability, and they're afraid of letting that go because the stability could end.