John Koskinen is an organizational restructuring expert who oversaw the government's preparations for Y2K.
John H. Thompson fielded only a limited number of tough questions while testifying before a Senate committee.
President Obama tapped Tangherlini to head the agency after an inspector general's report prompted a shake-up.
A Senate committee voted for moving to the next step in the confirmation process for acting GSA administrator Dan Tangherlini.
President Obama's choice to lead the agency testified Tuesday before the Senate Homeland Security and Governmental Affairs Committee.
The president on Thursday announced he would nominate Deputy Public Printer Davita Vance-Cooks to head the Government Printing Office.