Maybe give him a choice: "If your birth certificate proves you're American, you and your wife will be tried for treason and, if found guilty, executed as a traitor; if your birth certificate shows you are not a natural-born citizen of this country, then every official act committed by you will be expunged, those who aided and abetted your fraud will be prosecuted, and the Democrat Party will be disbanded."
Ah well, it was a nice dream to start the week off...