It is called original intent. We interpret the Constitution according to the language and definitions used at the time it was written. To do otherwise is to indulge in the "living document" nonsense that finds "rights" and "powers" that are nowhere written down. Unless, of course, you want the Constitution to be interpreted ad lib in accordance with prevailing political correctness. We have a choice, and we need to argue in favor of the truth. I hope you are in tune with that.