Congressional Review Act: Determining Which 'Rules' Must Be Submitted to Congress [Updated March 6, 2019] [open pdf - 2MB]
From the Document: "The Congressional Review Act (CRA) allows Congress to review certain types of federal agency actions that fall under the statutory category of 'rules.' The CRA requires that agencies report their rules to Congress and provides special procedures under which Congress can consider legislation to overturn those rules. A joint resolution of disapproval will become effective once both houses of Congress pass a joint resolution and it is signed by the President, or if Congress overrides the President's veto."
CRS Report for Congress, R45248
Congressional Research Service: https://crsreports.congress.gov/