As seen at David Codrea’s The War On Guns:

So long as they’re on an infringement roll…

AMENDMENT XXIV – Passed by Congress August 27, 1962. Ratified January 23, 1964.
Section 1.
The right of citizens of the United States to vote in any primary or other election for President or Vice President, for electors for President or Vice President, or for Senator or Representative in Congress, shall not be denied or abridged by the United States or any State by reason of failure to pay poll tax or other tax.

So poll taxes to keep out the riffraff are back on the table?

AMENDMENT XXVI – Passed by Congress March 23, 1971. Ratified July 1, 1971.
Section 1.
The right of citizens of the United States, who are eighteen years of age or older, to vote shall not be denied or abridged by the United States or by any State on account of age.

Hmmm… Unless we red flag someone because he might vote irresponsibly? I suppose that could apply to the 16th Amendment as well.

Or maybe, just maybe… this is the one the “no right is absolute” crowd really have in mind.

AMENDMENT XIII –
Section 1. Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.

Hey, if we’re going to chuck the Constitution, why not go all out?