South Carolina Republican Sen. Lindsey Graham does not plan to ease up on his campaign to stall President Barack Obama's national security nominees. On Wednesday, Graham called on Democrats to join him in seeking more information about details surrounding the deadly attack on an American compound in Benghazi, Libya, in September.

"If this was a Republican president, I gauran-damn-tee ya there'd be a lot of Democrats doing a lot more than I'm doing. And you know what? They probably should," Graham said at a Capitol Hill press conference. "I think Democrats had no problem doing that with Bush and, quite frankly, they did the country a service by probing into failures. I'm going to do the same."

Graham has been a vocal opponent of Obama's choice of John Brennan to head the CIA and former Nebraska Sen. Chuck Hagel to be defense secretary, saying he would vote to continue debating their confirmations in the Senate. Last weekend Graham suggested he would place a "hold" on the nominations—Senate procedure used to stall nominees or legislation—but Majority Leader Harry Reid on Tuesday said he would reject the request.

Graham, a member of the Senate Armed Services Committee, conducted one of the most intense questioning sessions during Hagel's hearing last month. He reiterated on Wednesday that he wants the administration to provide more information about the Benghazi attack before voting on the nominees.

"I'm gonna hit you and keep hittin' you. Absolutely," Graham said when asked by a reporter why he planned to continue his efforts against Hagel and Brennan. "You better believe that I'm not going to let this go."

Reid said Tuesday that he plans to put Hagel's nomination to a vote in the Senate later this week.