And who’s going to stop them???
That’s more than just a rhetorical question. We’ve seen at all levels (local police and DAs up to the U.S. President) that there’s a wide space for executive discretion. Basically, people who enforce the laws can decide which laws to enforce. This existed long ago, it isn’t something Mr. Biden created. But because the precedent is there, the ATF is free to do whatever they want until someone decides to enforce the laws which restrict them.
I haven’t dealt with ATF but I have dealt with MSHA, they have the same BS attitude.