President Barack Obama, center, points to fans as he honors the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. On the far right is Packers' General Manager Ted Thompson. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama reacts to be presented a stock certificate by Green Bay Packers football cornerback Charles Woodson, left, during a ceremony honoring the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. (AP Photo/Carolyn Kaster)

President Barack Obama is presented a Green Bay Packers football jersey by quarterback Aaron Rodgers, left, during a ceremony honoring the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. General Manager Ted Thompson is at center. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama is presented with a stock certificate, by Green Bay Packers football cornerback Charles Woodson, left, making him a team shareholder, during a ceremony honoring the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)

Green Bay Packers football fans cheer as President Barack Obama honors the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama poses for a photo with the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, during a ceremony honoring the team at White House in Washington. (AP Photo/Carolyn Kaster)

President Barack Obama poses for a group picture as he honors the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama shakes hands with Green Bays Packers head football coach Mike McCarthy, left, as General Manager Ted Thompson, looks on at center, during a ceremony honoring the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama stops for a photograph with Green Bay Packers football quarterback Aaron Rodgers during a ceremony to honor the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, at White House in Washington. (AP Photo/Carolyn Kaster)

President Barack Obama reacts to be presented a stock certificate by Green Bay Packers football cornerback Charles Woodson, left, during a ceremony honoring the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. On the far right is team General Manager Ted Thompson. General Manager Ted Thompson is at right. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama gestures while speaking during a ceremony to honor the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, at White House in Washington. (AP Photo/Carolyn Kaster)

Members of Green Bay Packers football team take picture of President Barack Obama, center, during a ceremony honoring the Super Bowl XLV Champions, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama is offered a football and Green Bay Packers helmet to sign during a ceremony honoring the Super Bowl XLV Champion Green Bay Packers, Friday, Aug. 12, 2011, at White House in Washington. (AP Photo/Carolyn Kaster)

President Barack Obama shakes hands with Green Bay Packers football President and CEO Mark Murphy during a ceremony honoring the Super Bowl XLV Champions, Friday, Aug. 12, 2011, on the South Lawn of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)