Yea, I know. But that’s not the world we’re living in, is it? If the leftists want to turn us all into criminals, we can say we’ve already been ‘proved innocent’ with a pre-check. It would just have to include the proviso that no further check is necessary when showing that card to a gun dealer, thereby preventing any kind of registration.
A carry permit holder is/was originally exempt from the background check for dealer purchases, i.e. that was the "pre check" card.
I don't know if that is still in effect, since I don't make that kind of purchases (which are in fact registration), and I just use the carry permit I was born with.