Justice Thomas in McDonald v. Chicago:

With the inquiry appropriately narrowed, I believe this case presents an opportunity to reexamine, and begin the process of restoring, the meaning of the Fourteenth Amendment agreed upon by those who ratified it.

Blackman & Shapiro in Pandora’s Box:

The purpose of this article is to provide a roadmap to welcome the Privileges or Immunities Clause back into constitutional jurisprudence. The Slaughter-House Cases “sapped the [Privileges or Immunities Clause] of any meaning”  but the Supreme Court now has the opportunity correct this mistake.  Taking up Justice Thomas’s gauntlet, we “endeavor to understand what the framers of the Fourteenth Amendment thought” the Privileges or Immunities Clause meant, and seek to restore that original meaning.

Just saying.