This lawsuit is against the Biden-Administration's ATF rule known as “Definition of ‘Engaged in the Business’ as a Dealer in Firearms” which redefines what counts as a firearm dealer. This new definition not only up-ends a long-established understanding but further infringes on American's rights by criminalizing private transactions. Aside from making previously legal transfers illegal, this effectively creates a universal background check system without Congressional approval. Thereby further expanding and updating the ATF's already massive gun registry, making it easier to enact and enforce a firearms confiscation program. GOA, GOF, state-based pro-gun groups, and several state Attorneys General teamed up to take the ATF to court over this rule change.