The Small Business Regulatory Enforcement Fairness Act (SBREFA) of 1996 provided for review panels to allow greater participation of small businesses in the federal regulatory arena.
SBREFA created Small Business Advocacy Review (SBAR) panels, which certain agencies (Environmental Protection Agency, Occupational Safety and Health Administration, Consumer Financial Protection Bureau) must convene prior to proposing rules that would have a substantial effect on a significant number of small entities.
See Recent Panels here.