But there’s something even more odd about how conservatives like Barrett apply originalism. Because they seem to believe that the “original meaning” of every word and phrase just happens to be a conservative meaning. And where they can’t find the meaning that they want, these dedicated preservationists have a second approach … throw it out. Throw it all out. Like the entire 14th Amendment.
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As far as the 14th Amendment goes, it includes what are now referred to as the Citizenship Clause, the Privileges Clause, the Due Process Clause, and the Equal Protection Clause. In short, it says that everyone born in the United States is a full citizen, with the full rights due to a citizen, and can’t be deprived of those rights unless they’re given due process of law. All of this makes the 14th Amendment integral to questions of citizenship, and foundational for Civil Rights legislation. It’s such an important amendment, that legal scholars have called it “the second Constitution” for its attempts to tear out the elements of slavery built into the original document. Among other things, the Supreme Court has made it clear that the Civil Rights Act of 1964 rests entirely on the authority granted to Congress by the 14th Amendment.
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Back in 2011, The Atlantic took a look at this question and how conservative Republicans became “14th Amendment deniers.” For some Republicans, the 14th Amendment was viewed as being only intended to help those who had been directly enslaved, and not applicable to future generations. This view has become common in right-wing media, and sorry as that sounds, it’s not even the most radical view. The even uglier approach has been to outright challenge the validity of 14th Amendment because members of Confederate states were not seated in Congress when the amendment was proposed just after the end of the Civil War. Because of this, say the deniers, the Congress itself was illegitimate, and so anything it recommended—including the 14th and 15th Amendments—are illegitimate.
https://www.dailykos.com/stories/2020/9/26/1980903/-Why-Trump-s-expected-Supreme-Court-nominee-believes-all-Civil-Rights-legislation-is-illegitimate
Some quotes from Amy's writings, “Congress has to decide whether to … rely on the power conferred by the possibly illegitimate Fourteenth Amendment.” “The originalist legislator might have to face questions … such as the legitimacy of the Fourteenth Amendment.”
What happens when the SCOTUS starts throwing out Constitutional amendments that are foundational to the functioning of moders society?