This cite brings up something I didn't know.  The CRA process  REALLY gets rid of these midnight Obama rules.

http://hotair.com/archives/2017/02/16/congress-approves-cra-repeal-of-obama-gun-regulation-with-aclus-blessing/

"As the CRA puts it, a rule or regulation disapproved by Congress in this fashion …
“…may not be reissued in substantially the same form, and a new rule that is substantially the same as such a rule may not be issued, unless the reissued or new rule is specifically authorized by a law enacted after the date of the joint resolution disapproving the original rule.”

A new President doesn't get to reissue...

"..the nonpartisan National Council on Disability and the American Civil Liberties Union, which said in a letter to Congress that the “rule automatically conflates one disability-related characteristic, that is, difficulty managing money, with the inability to safely possess a firearm.”