Given the almost religious attention the term limit of sitting presidents of the US has it is interesting that so very little attention is given to the fact that the EU structure has no effectual limit at all; if the current EU President were to be nominated by the European Council in a circular manner she will effectually serve for perpetuity (while the Parliament can in principle say no they are only ever given one candidate to vote for (...) and has thus far never said no to any nominee).