Kerry subpoenaed to testify over Benghazi documents

House Oversight Committee Chairman Darrell Issa announced Friday he has subpoenaed Secretary of State John Kerry to testify about the terror attack in Benghazi.
The California Republican called on Kerry to appear at a May 21 hearing.
Republicans have accused the Obama administration of withholding documents from Congress that were previously subpoenaed.
The terror attack in eastern Libya in September 2012 killed Ambassador Christopher Stevens and three other Americans.