(i) PROHIBITION RELATING TO ESTABLISHMENT OF REGISTRATION SYSTEMS WITH RESPECT TO FIREARMS- No department, agency, officer, or employee of the United States may--
(1) require that any record or portion thereof generated by the system established under this section be recorded at or transferred to a facility owned, managed, or controlled by the United States or any State or political subdivision thereof; or(2) use the system established under this section to establish any system for the registration of firearms, firearm owners, or firearm transactions or dispositions, except with respect to persons, prohibited by section 922 (g) or (n) of title 18, United States Code or State law, from receiving a firearm.
Nice find. However, that is law, and pertainent only to background check data. Are there any Supreme Court cases that determine a threshhold for potential abuse of a right, as opposed to actual abuse, for grounds to declare an action unconstitutional?