We have both had the privilege of heading the Office of the Solicitor General during different administrations. We may have different ideas about the ideal candidate in the next presidential election, but we agree on one important principle: voters should be able to choose from all constitutionally eligible candidates, free from spurious arguments that a U.S. citizen at birth is somehow not constitutionally eligible to serve as President simply because he was delivered at a hospital abroad. The Constitution directly addresses the minimum qualifications necessary to serve as President. In addition to requiring thirty-five years of age and fourteen years...