Top FBI officials were in Washington to answer questions about domestic surveillance.
FBI Director, Robert Muller, appeared before a Senate panel. Muller took the blame for a recent report that said the FBI illegally and improperly obtained telephone, e-mail and financial records of American citizens.
"I am responsible for those shortcomings. I am also responsible for making sure they do not happen again," Muller said.
Mueller promised swift action, including an audit of all 56 FBI field offices.
In 2001, the Patriot Act gave the FBI the power to access the personal information of American citizens without obtaining a judges approval.
Despite Mueller's explanation Chairman Sen. Patrick Leahy said the senate judiciary committee is going to re-examine the authority granted by the Patriot Act.