Hillary Rodham Clinton

FILE – In this Jan. 23, 2013 file photo, then-Secretary of State Hillary Rodham Clinton testifies on Capitol Hill in Washington, on the deadly September attack on the U.S. diplomatic mission in Benghazi, Libya, that killed Ambassador Chris Stevens and three other Americans. Congressional aides say the special House committee investigating the 2012 attacks on the U.S. mission in Benghazi, Libya, will issue subpoenas for Clinton’s personal emails. The aides say that possible as early as Wednesday, the committee will seek the additional material from the potential 2016 Democratic presidential candidate. (AP Photo/Pablo Martinez Monsivais, File)