BOSTON, April 15, 2015 /PRNewswire/ -- Liberty Mutual Insurance officially announced today a multi-year sponsorship of the U.S. Soccer Federation, the national governing body for the sport of soccer in the United States. The sponsorship, which extends through 2018, designates Liberty Mutual as the Official Insurance Partner of the U.S. Men's and Women's National Teams, as well as the Youth National Teams and the U.S. Soccer Development Academy.