State Department officials acknowledged that they rejected security requests in Libya in the weeks leading up to the Sept. 11 attack in Benghazi during a congressional hearing on Wednesday. Deputy Assistant Secretary of State Charlene Lamb admitted to opposing a request to extend the stay of a security team that had assisted Ambassador Christopher Stevens and other diplomats between February and August, though she said it would not have made a difference in Benghazi. The security officer who made the request said he interpreted the decision to mean “there was going to be too much political cost.”