House Ways and Means Committee Chairman Rep. Dave Camp , R-Mich., center, flanked by the committee's ranking member, Rep. Sander Levin, D-Mich., right, and Rep. Sam Johnson, R-Texas, listen on Capitol Hill in Washington, Wednesday, April 9, 2014, as the panel debates whether IRS official Lois Lerner’s refusal to testify to Congress deserves criminal prosecution. AP