If anyone remembers the last time a Republican House attempted to hold major hearings on corruption and malfeasance by Democrats, it was in the 1990s and the GOP held promised hearings on Waco and Ruby Ridge.
Democrats in the minority took control of the hearings and made them a referendum on the NRA and gun violence.
Result of the hearings was the Clinton gun ban, a federal law against all sorts of firearms including scary looking carbines and magazines that held more than 15 rounds.
So anyone expecting a boom from these hearings is either ignorant about Republican Congressmen or just a moron.