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WASHINGTON, DC - SEPTEMBER 06: Senate Majority Leader Harry Reid (D-NV) (C) hosts the largest gathering of former U.S. Senate majority leaders, including (L-R) Sen. Tom Daschle (D-SD), Sen. Trent Lott (R-MS), Sen. George Mitchell (D-ME) and Sen. Bill Frist (R-TN) at the U.S. Capitol September 6, 2013 in Washington, DC. According to the Senate Historian, this is the largest gathering of a bipartisan group of Senate majority leaders. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - SEPTEMBER 06:  Senate Majority Leader Harry Reid (D-NV) (C) hosts the largest gathering of former U.S. Senate majority leaders, including (L-R) Sen. Tom Daschle (D-SD), Sen. Trent Lott (R-MS), Sen. George Mitchell (D-ME) and Sen. Bill Frist (R-TN) at the U.S. Capitol September 6, 2013 in Washington, DC. According to the Senate Historian, this is the largest gathering of a bipartisan group of Senate majority leaders.  (Photo by Chip Somodevilla/Getty Images)