TL;DR: Think of it as a companion to MTG's efforts. It would prohibit states from banning sale, importation or possession of any "constitutionally protected firearm". TBF, it was originally proposed in the 115th Congress, but there are additional adds this go around (sauce not posted on the dotgov site yet).

TL;DR: Think of it as a companion to MTG's efforts. It would prohibit states from banning sale, importation or possession of any "constitutionally protected firearm".