IRS probe ignored most influential groups

In this photo taken June 29, 2011, photo Sen. Sheldon Whitehouse, D-R.I., speaks to reporters on Capitol Hill in Washington. Whitehouse is among a small group in the Senate pushing campaign finance reform measures that would force outside groups to disclose their donors. The Internal Revenue Service has endured withering criticism for its scrutiny of conservative political groups during the 2012 elections. "The IRS goes AWOL when wealthy and powerful forces want to break the law in order to hide their wrongful efforts and secret political influence," he says. "Picking on the little guy is a pretty lousy thing to do."