Finally, state enforcement of Section 3 with respect to the Presidency would raise heightened concerns. “[I]n the context of a Presidential election, state-imposed restrictions implicate a uniquely important national interest.” Anderson v. Celebrezze, 460 U. S. 780, 794–795 (1983) (footnote omitted). But state-by-state resolution of the question whether Section 3 bars a particular candidate for President from serving would be quite unlikely to yield a uniform answer consistent with the basic principle that “the President . . . represent[s] all the voters in the Nation.” Id., at 795 (emphasis added). Conflicting state outcomes concerning the same candidate could result not just from differing views of the merits, but from variations in state law governing the proceedings that are necessary to make Section 3 disqualification determinations