Senate Minority Leader Mitch McConnell (R-Ky.) said Saturday that there's a chance Republicans will filibuster former Nebraska senator Chuck Hagel's nomination as secretary of defense. "Sen. Hagel did not do a very good job before the Armed Services committee," McConnell said. "I think the opposition to him is intensifying. Whether that means he will end up having to achieve 60 votes or 51 is not clear yet." McConnell did not say how he planned to vote.