In this photo provided by FOX News, Sen. Jon Kyle, R-Ariz., the Senate's second-ranking Republican, right, listens to Sen. Byron Dorgan, D-N.D., as they appear on "Fox News Sunday" in Washington, Sunday, Nov. 16, 2008. (AP Photo/FOX News Sunday, Freddie Lee) MANDATORY CREDIT: FREDDIE LEE, FOX NEWS SUNDAY

Senate Appropriations Committee members Sen. Byron Dorgan, D-N.D., left, and Sen. Daniel Inoyue, D-Hawaii, talk on Capitol Hill in Washington, Thursday, May 15, 2008, prior to the start of the committee's hearing on markup of the 2008 supplemental appropriations bill. (AP Photo/Lauren Victoria Burke)

Senate Appropriations Committee members Sen. Byron Dorgan, D-N.D., left, and Sen. Daniel Inoyue, D-Hawaii, talk on Capitol Hill in Washington, Thursday, May 15, 2008, prior to the start of the committee's hearing on markup of the 2008 supplemental appropriations bill. (AP Photo/Lauren Victoria Burke)

Sen. Byron Dorgan, D-N.D., speaks at a news conference on Capitol Hill in Washington, Tuesday, May 13, 2008, to discuss energy policy in relation to President Bush's upcoming trip to the Middle East. (AP Photo/Brendan Hoffman)

Sen. Byron Dorgan, D-N.D., second from left, accompnaied by fellow senators, gestures during a news conference on Capitol Hill in Washington, Tuesday, May 13,2008, to discuss energy policy in relation to President Bush's upcoming trip to the Middle East. From left are, Sen. Charles Schumer, D-N.Y. Dorgan, Sen. Bernard Sanders, I-Vt., Sen. Bob Casey Jr., D-Pa., and Sen. Amy Klobuchar, D-Minn. (AP Photo/Brendan Hoffman)