The latest really bad idea to move from the fringe to the Republican mainstream at light speed: repealing the “birthright citizenship” granted by the 14th amendment to the US Constitution.

That’s right — the people who publicly make a fetish out of the Constitution, declaring their unconditional love for every word in it, are the same ones who want to ignore it (in the case of the Park51 project) or cut out the parts that grant protections to minorities: McCain, Coburn Support Review of 14th Amendment.

Add Sen. John McCain (R-Ariz.) and Sen. Tom Coburn (R-Okla.) to the list of Republican senators who have said they would support a review of “birthright citizenship.”

There’s a growing chorus, led by Senate Minority Leader Mitch McConnell (R-Ky.), saying that Congress should hold hearings on removing the Constitutional provision that grants automatic citizenship to anyone born in America. Talking Points Memo reports that when McCain and Coburn were asked whether they support that push, McCain said he supports “the idea of having hearings,” but brushed off questions about whether he would support an amendment. Coburn was more open, telling TPM: “I’m not sure I’m going to embrace it but might.”

Sen. Jon Kyl (R-Ariz.) also recently voiced support for hearings, while Sen. Lindsey Graham (R-S.C.) said he plans to introduce a constitutional amendment to change the 14th Amendment.

Pure insanity, of the xenophobic kind.