U.S. President Barack Obama (L) is presented with a jersey by 1985 Chicago Bears Coach Mike Ditka as Defensive Co-Ordinator Buddy Ryan watches on as Obama honors the Super Bowl-winning Chicago Bears NFL team on the South Lawn of the White House in Washington, October 7, 2011. In 1986, the team’s White House reception was cancelled due to the Space Shuttle Challenger tragedy. REUTERS/Jason Reed (UNITED STATES – Tags: POLITICS SPORT FOOTBALL)