By STEPHEN OHLEMACHER
WASHINGTON (AP) -- The head of the IRS says he's seen no evidence anyone committed a crime when the agency lost emails that might shed light on the agency's targeting of political groups.
Republicans in Congress aren't buying it. On Tuesday, they will hear from a White House official who once worked at the IRS.
Jennifer O'Connor helped the agency gather documents related to the congressional investigations. She has since moved to the White House counsel's office.
House Oversight Committee Chairman Darrell Issa subpoenaed O'Connor on Monday night after the White House declined his invitation to have her testify. After getting the subpoena, the White House relented.
IRS Commissioner John Koskinen on Monday brushed aside accusations that the IRS has obstructed the investigations.