I'm aware that Lafayette was offered control of France during the July revolution, but he declined it. Incidentally, he was also given the status of "natural born citizen" of the US in 1784, which (theoretically) would have made him eligible for the presidency.
The challenge, then, is this:
Make LaFayette head of state of either (a) France, between the firing on the Champs-de-Mars and the end of the Terror, or (b) have Lafayette, with any post-US citizenship POD, become head of state of the US.
I'll be seriously impressed if B isn't ASB, but it's just something I thought of and found interesting.