J. Christopher Stevens, the U.S. ambassador to Libya who was killed in an attack on the U.S. Consulate in Benghazi, Libya, on Tuesday, Sept. 11, 2011, is pictured in Benghazi on Wednesday, April 11, 2011. Leaders of a House committee have said U.S. diplomats in Libya made repeated requests for increased security for the consulate in Benghazi and were turned down by officials in Washington. In a letter to Secretary of State Hillary Rodham Clinton, Rep. Darrell Issa and Rep. Jason Chaffetz said their information came from "individuals with direct knowledge of events in Libya." (AP Photo/Ben Curtis)

Photo by: Ben Curtis

J. Christopher Stevens, the U.S. ambassador to Libya who was killed in an attack on the U.S. Consulate in Benghazi, Libya, on Tuesday, Sept. 11, 2011, is pictured in Benghazi on Wednesday, April 11, 2011. Leaders of a House committee have said U.S. diplomats in Libya made repeated requests for increased security for the consulate in Benghazi and were turned down by officials in Washington. In a letter to Secretary of State Hillary Rodham Clinton, Rep. Darrell Issa and Rep. Jason Chaffetz said their information came from "individuals with direct knowledge of events in Libya." (AP Photo/Ben Curtis)