FILE - In this Feb. 11, 2014, file photo, Sen. John Walsh, D-Mont., right, and his son Michael leave the Old Senate Chamber on Capitol Hill in Washington, D.C, after a ceremonial swearing-in ceremony with Vice President Joe Biden. A U.S. Army War College official says Tuesday, July 29, 2014, the Department of Defense has taken the unusual step of overseeing a plagiarism investigation against Sen. Walsh. The Carlisle, Pa., college began the investigation after a New York Times story showed Walsh used others' work without attribution in a 2007 research paper required for a master's degree. Provost Lance Betros said the Defense Department intervention is very unusual and was done because Walsh is a member of Congress who is a military veteran. (AP Photo/Lauren Victoria Burke, File)
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