There is a letter to AG Barr asking him to crack down on proposed changes to gun purchase processing. Good for the House Republicans who signed it. All things considered, though, Barr can't do much unless Trump wins the election November 3rd. That's why ATF is doing this (and a few other things, like cracking down on AR-pistols with arm braces) at this particular moment. If Biden wins, ATF will be ready and can point to proposals already in motion to enact gun control.