"No person shall run for, be nominated for, or serve as a US Representative, Senator, President, Vice-President, Cabinet Member or be employed in a position of direct policy-making authority within any federal agency or instrumentality if they hold or have held citizenship or the right of lawful permanent residency in any nation other than that of the United States during the previous seven years."
Whoa, Ticker Dude, what's with all the anti-semitism!?!
Term limits don't encourage better behavior, they encourage "grab as much as you can as fast as you can in the time available". I mean, remember to whom we're applying this stuff.
I'm tempted to call for the Athenian model of "citizenship", but that's probably going too far for modren America.