Much has already been learned about the arrogance of the IRS from the House investigations of the agency's targeting of conservatives. The revelations emerged despite strenuous efforts by Democrats in Washington and by the IRS itself to block inquiries and deny the existence of political targeting - targeting that the former head of the IRS Exempt Organizations Unit, Lois Lerner, eventually acknowledged and apologized for in May 2013.

Much has already been learned about the arrogance of the IRS from the House investigations of the agency's targeting of conservatives. The revelations emerged despite strenuous efforts by Democrats in Washington and by the IRS itself to block inquiries and deny the existence of political targeting - targeting that the former head of the IRS Exempt Organizations Unit, Lois Lerner, eventually acknowledged and apologized for in May 2013.