So long as it is only a “fitness to buy” check, and contains no information about the purchase(er) other than the fact of a purchase (no firearms specific information) it is much less an infringement than otherwise might be in place.
Most of the laws concerning firearms ownership (not those intended to affect criminals who use firearms) are unconstitutional despite what the scotus might say. If it infringes on the right of a citizen to acquire, keep, or bear, it is unconstitutional.
Enforce the Bill of Rights, repeal unconstitutional laws.
.02, YMMV
I’d accept a national firearms owner I.D. stating that I have passed a NICS check and therefore eligible to own, buy, sell and carry any firearm, at any time, in any state.
No FFL’s for transfer, no registration, no permits. One I.D. that states that I am not disqualified from owning a firearm.
Anything short of that is a non-starter.
Want to make a wager any “universal background checks” acceptable to the Democrats will require information about the gun, and will require the records to be kept for a minimum of 20 years, or be turned over to the government?