Per Curiam
taking a qualifying oath and then engaging in insurrection or rebellion—nothing more. Any congressional legislation enforcing Section 3 must, like the Enforcement Act of 1870 and §2383, reflect “congruence and proportionality” between preventing or remedying that conduct “and the means adopted to that end.” City of Boerne, 521 U. S., at 520. Neither we nor the respondents are aware of any other legislation by Congress to enforce Section 3. See Tr. of Oral Arg. 123.
Any state enforcement of Section 3 against federal officeholders and candidates, though, would not derive from Section 5, which confers power only on “[t]he Congress.” As a result, such state enforcement might be argued to sweep more broadly than congressional enforcement could under our precedents. But the notion that the Constitution grants the States freer rein than Congress to decide how Section 3 should be enforced with respect to federal offices is simply implausible.
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. Some States might allow a Section 3 challenge to succeed based on a preponderance of the evidence, while
