We brought in one of the toughest inspector generals in Washington as well as professionals from private industry to help run the implementation.

WHITEHOUSE: The Recovery Act ?C Year One

They follow three previous hearings by House and Senate panels, and the matter also is under investigation by the Justice Department, the Treasury inspector generals office and Werfel in his new capacity.

CNN: New IRS chief asks for patience over targeting probe

The inspector generals who have been looking at each one of these projects -- there's a panel of 10 inspector generals that reviews this -- there's very, very few -- I mean, less than a couple dozen that have been referred for further investigation, based on all the reports of any fraud coming in as a conduct of the program.

WHITEHOUSE: President Obama Calls for New Steps to Prepare Children for College and Careers | The White House