Both in his prototype and in his final version of the Fourteenth Amendment, [Senator John A.] Bingham used the words privileges and immunities as a shorthand description of fundamental or constitutional rights. Use of the words in this way had a long and distinguished heritage. Blackstone’s Commentaries on the Laws of England , published in the colonies on the eve of the Revolution, had divided the rights and liberties of Englishmen into those “immunities” that were the residuum of natural liberties and those “privileges” that society had provided in lieu of natural rights . See Curtis, No State Shall Abridge , 64.