Since news broke of allegations that the IRS improperly targeted applications for conservative tax-exempt organizations, members of Congress of all stripes have been eager to go on the record condemning these revelations.

On Tuesday, however, lawmakers who are actual stakeholders in the controversy continued to move the ball forward in responding to the charges and holding the agency accountable.

The Congressional Tea Party Caucus, which just last month relaunched after a period of dormancy, will hold a press conference Thursday morning.

Caucus chairwoman and former federal tax attorney Michele Bachmann, R-Minn., and “Tea Party leaders” will “tell their stories of IRS intimidation and demand further investigation,” according to a Tuesday press release.

According to reports, IRS officials were instructed to apply extra scrutiny to political groups with “Tea Party” or “patriot” in their names, among other labels that could signify a Republican-leaning organization.

House Ways and Means Committee Chairman Dave Camp, R-Mich., and ranking member Sander M. Levin, D-Mich., also took another step Tuesday to follow up on their announcement Monday that at the end of the week they would convene a congressional hearing on the allegations.

In a letter to acting IRS Commissioner Steve Miller, Camp and Levin requested answers to more than a dozen questions to be received by May 21, along with a slew of internal documents and records.

“Chairman Camp and I have agreed it is essential that there be a thorough and bipartisan investigation and effective remedial action,” Levin said in a statement.

Capping a day of continued discussion of what comes next in getting to the root of the charges against the IRS was the Tuesday evening release of the hotly anticipated report from the Treasury Inspector General for Tax Administration that would appear to confirm allegations.