Well they can start by having a conversation with Pam Bondi, and themselves:
https://txgunrights.org/pam-bondis-doj-defends-nfa-in-continued-war-on-gun-owners/
Pam Bondi’s DOJ Defends NFA in Continued War On Gun Owners – Texas Gun Rights
Pam Bondi’s Department of Injustice (DOJ) just detonated a political and constitutional bombshell. In a stunning 48-page summary-judgment brief filed in SilencerShop Foundation v. ATF, DOJ is openly asking a federal judge to resurrect the National Firearms Act,
https://txgunrights.org/pam-bondis-doj-defends-nfa-in-continued-war-on-gun-owners/