A lot of kids do stupid shit when young that wasn’t a crime when I was growing up, or at least the cops wouldn’t arrest and book you. They just hauled you to the station, called your parents and they came and got you with the expectation you’d get walloped - a crime now too that justified a NICS denial.
WIll ATF come after 18-21 year olds that are denied on a NICS? Will they notify local LE? Will they notify colleges? Will they change the 4473 to notify people that expunged juvenile records must be disclosed as arrests? Is a suspension from school for behavioral issues an involuntary adjudication by in loco parentis judges (school administrators)?
Motivated killers find guns.
The Left is convinced that the 5+ million new “lawful” gun owners 2019-2021, who became 1st time gun owners when buying a gun via a NICS background check, are culpable for the 30% increase in murder during that period. That in itself tips their hand - it’s not a NICS UBC that matters to them - it’s the part about owning a gun that they don’t like about gun owners. But we know, if they take our guns away, they still won’t like us.