I thought we were just a bunch of jerks that invented a game and stole the name of another country's sport. But NO, it was the Brits fault. They named football soccer, so we took football, and then they changed soccer back to football.
http://www.businessinsider.com/why-americans-call-it-soccer-2014-6
http://www.businessinsider.com/why-americans-call-it-soccer-2014-6