Where Lash does fantastic work -- illustrated here -- is on the ENUMERATED rights that the P or I Clause was meant to incorporate to apply against state and local governments. Including but not limited to the first eight amendments of the federal bill of rights.
The man who drafted the Privileges or Immunities Clause, John Bingham, could not have been clearer about his desire to enforce the Bill of Rights against the States. On February 28, 1866, when John Bingham submitted his first draft of the Privileges or Immunities Clause, he declared, “[t]he proposition pending before the House is simply a proposition to arm the Congress of the United States, by the consent of the people of the United States, with the power to enforce the bill of rights as it stands in the Constitution to-day. It “hath that extent—no more.” On March 9th, Bingham again declared that “the enforcement of the bill of rights [against the states] is the want of the Republic.” On May 10, following the submission of Bingham’s final draft, once again Bingham declared “There was a want hitherto, and there remains a want now, in the Constitution of our country, which the proposed amendment will supply.” The Privileges or Immunities Clause would finally allow congress to enforce provisions like the eighth amendment’s protection against cruel and unusual punishments. Once again, Bingham assured his colleagues, “That is the extent that it hath, no more.” Finally, in 1871, Bingham explained:
"Jefferson well said of the first eight articles of amendments to the Constitution of the United States, they constitute the American Bill of Rights. . . . They secured . . . all the rights dear to the American citizen. And yet it was decided, and rightfully, that these amendments, defining and protecting the rights of men and citizens, were only limitations on the power of Congress, not on the power of the States. . . .
Mr. Speaker, this House may safely follow the example of the makers of the Constitution and the builders of the Republic, by passing laws for enforcing all the privileges and immunities of citizens of the United States, as guarantied by the amended Constitution and expressly enumerated in the Constitution.”