It is a remedy for Roe v. Wade but I wouldn’t call it ‘backdoor.’ It’s a Constitutional solution to the lack of clarity about it in the Bill of Rights. As far as the chances of the Life At Conception Act passing now I agree. But in order to get any controversial legislation passed you have to put if forward over and over again. Rand Paul has been pushing this for quite a while now. No one else has.
With all due respect TigersEye, your statement brings to mind the liberal argument that Clause 5 of Section 1 of Article II, the natural born citizen clause, is not defined in the Constitution. But a little research reveals that nbc is a well-understood, well-documented legal term that the drafters of the Constitution were familiar with. This is why I don't put much faith into the side-door argument of claiming that "person" is undefined in Section 1 of 14A, particularly since Bingham also used the word born in that statute.