The State Department has no intention of providing Congress more witnesses to the Sept. 11, 2012 attack on the U.S. mission in Benghazi, despite Sen. Lindsey Graham’s threat to hold up all nominations until he gets satisfaction on the issue. .... But the State Department won’t make more Benghazi witnesses available in response to Graham’s tactic, she said. “Our response is that we need to have these officials in place,” said Psaki. “That’s the only way to strengthen our interests overseas and to be able to represent our diplomatic agenda. It’s also is important for our security interests, which is...