GOP senators ask for more details about discrepancies in Erroll Southers’ description of the incident. GOP senators want to know when White House knew about FBI censure, what other actions the agency may have taken against him. GOP senator Jim DeMint, John McCain, Charles Grassley, Tom Coburn among those who signed letter. Souther’s nomination could further delay appointment of a new TSA administrator until a reply comes from the White House. The controversy comes amid continuing concerns over security failures that resulted in botched attempt to blow up an international flight to Detroit.”]