IF (big if I grant) he does all that without digging any real holes.........
how do we elect him President? Ammendment? Or can congress pass a law to
"give him a pass" somehow?

-W

Constitutional amendment. (Or you elect his wife, who defers to Arnold in all
matters.)

Bad idea. The Constitution shouldn't be tweaked around for the convenience of
the moment, regardless how popular a particular movie star might be.