Washington

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Sen. John McCain, Arizona Republican. (AP Photo/Carolyn Kaster)

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Sen. Marco Rubio, Florida Republican, speaks on Capitol Hill in Washington on Jan. 8, 2014. (Associated Press) **FILE**

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Washington Nationals center fielder Denard Span (2) smiles before a baseball game against the Atlanta Braves at Nationals Park, Monday, Sept. 8, 2014, in Washington. (AP Photo/Alex Brandon)

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D.C. United head coach Ben Olsen, center in tie, stands during the National Anthem, before an MLS soccer match against the New York Red Bulls, at RFK Stadium, Sunday, Aug. 31, 2014, in Washington. (AP Photo/Alex Brandon)

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D.C. United fans cheer during the second half of an MLS soccer match against the New York Red Bulls, at RFK Stadium, Sunday, Aug. 31, 2014, in Washington. United won 2-0. (AP Photo/Alex Brandon)

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D.C. United midfielder Nick DeLeon (14) and New York Red Bulls defender Roy Miller (7) attempt to head the ball during the first half of an MLS soccer match on Sunday, Aug. 31, 2014, in Washington. (AP Photo/Alex Brandon)

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New York Red Bulls defender Ambroise Oyongo (3) and D.C. United forward Eddie Johnson, right, go for the ball during the second half of an MLS soccer match on Sunday, Aug. 31, 2014, in Washington. United won 2-0. (AP Photo/Alex Brandon)

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D.C. United goalkeeper Bill Hamid (28) in action during the first half of an MLS soccer match against the New York Red Bulls, at RFK Stadium, Sunday, Aug. 31, 2014, in Washington. (AP Photo/Alex Brandon)

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D.C. United goalkeeper Bill Hamid (28) in action during the first half of an MLS soccer match against the New York Red Bulls, at RFK Stadium, Sunday, Aug. 31, 2014, in Washington. (AP Photo/Alex Brandon)

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President Obama is scheduled to attend three Democratic fundraisers this week in Washington. (Associated Press)

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House Speaker John Boehner of Ohio speaks during a news conference on Capitol Hill in Washington on Sept. 11, 2014. (AP Photo/J. Scott Applewhite) ** FILE **

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Assistant Attorney General Leslie Caldwell leaves after speaking at the Justice Department's Health Care Fraud Training Conference at the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) headquarters in Washington, Wednesday, Sept. 10, 2014. (AP Photo/Pablo Martinez Monsivais) ** FILE **

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Then-Secretary of State Hillary Rodham Clinton, and former President Bill Clinton, listen to speakers in Washington in this Jan. 14, 2011, file photo. (AP Photo/Carolyn Kaster, File)

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Washington Capitals right wing Alex Ovechkin (8), from Russia, skates on the ice during a pause in the action in the second period of an NHL hockey game against the Tampa Bay Lightning, Sunday, April 13, 2014, in Washington. (AP Photo/Alex Brandon)

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President Barack Obama, left, and first lady Michelle Obama, second from right, help build a playground as they participate in a service project at the Inspired Teaching School to mark the 13th anniversary of the 9/11 attacks, on Thursday, Sept. 11, 2014, in Washington. (AP Photo/Evan Vucci)

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White House press secretary Josh Earnest answers a question on the administration strategy to combat the Islamic State group during the daily press briefing, Thursday, Sept. 11, 2014, at the White House in Washington. (AP Photo/Evan Vucci)

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Thousands of bikers assembled in Fort Washington for a ride into the District in remembrance of the Sept. 11 terror attacks (Photo courtesy of Prince George's County Police Department)

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President Obama addresses the nation from the Cross Hall in the White House in Washington. (Associated Press)

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In this image made through a window of the Oval Office, President Barack Obama speaks on the phone to Saudi Arabia's King Abdullah from his desk at the White House in Washington, Wednesday, Sept. 10, 2014, ahead of his address to the nation tonight regarding Iraq and Islamic State group militants. (AP Photo/Charles Dharapak)

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Former Presidents Bill Clinton, left, and George W. Bush, laugh while participating in the Presidential Leadership Scholars Program Launch, Monday, Sept. 8, 2014, at The Newseum in Washington. The two are launching a new scholars program at four presidential libraries, aiming to help academics and business leaders learn more about presidential leadership. (AP Photo/Jacquelyn Martin)