President Barack Obama is presented with a team jersey by Pittsburgh Steelers President Arthur J. Rooney II as team Chairman Dan Rooney, second from right, and coach Mike Tomlin, look on as the president honored the Super Bowl champion Pittsburgh Steelers, Thursday, May 21, 2009, on the South Lawn of the White House in Washington. Dan Rooney has been nominated to become U.S. Ambassador to Ireland. (AP Photo/Charles Dharapak)

President Barack Obama waves on the South Lawn of the White House in Washington, Thursday, May 21, 2009, where he honored the Super Bowl champion Pittsburgh Steelers. (AP Photo/Haraz N. Ghanbari)

President Barack Obama, along with Pittsburgh Steelers Chairman Dan Rooney, center, and coach Mike Tomlin, pose with the Vince Lombardi Trophy and Super Bowl champion Pittsburgh Steelers, Thursday, May 21, 2009, in the East Room of the White House in Washington. (AP Photo/Charles Dharapak)

WASHINGTON - MAY 21: U.S. President Barack Obama (L) poses with Pittsburgh Steelers Chairman Dan Rooney (C) and Head Coach Mike Tomlin (R) during a picture with the 2009 NFL Super Bowl champion Pittsburgh Steelers in the East Room of the White House May 21, 2009 in Washington, DC. (Photo by Aude Guerrucci-Pool/Getty Images)

President Barack Obama, fourth from right, along with Pittsburgh Steelers wide receiver Hines ward, fifth from right, Sen. Arlen Specter, D-Pa., third from right, and others, help assemble military care packages on the South Lawn of the White House, Thursday, May 21, 2009, in Washington. (AP Photo/Haraz N. Ghanbari)

President Barack Obama plays with a football as he walks back to the Oval Office of the White House in Washington, Thursday, May 21, 2009, after an event honoring the Super Bowl champion Pittsburgh Steelers on the South Lawn. (AP Photo/Charles Dharapak)

President Barack Obama is presented with a team jersey by Pittsburgh Steelers President Art Rooney as Obama honored the Super Bowl champions Pittsburgh Steelers, Thursday, May 21,2009, on the South Lawn of the White House in Washington. (AP Photo/Charles Dharapak)

From left, Pittsburgh Steelers wide receiver Hines Wards, President Barack Obama, Steelers Chairman President Dan Rooney, Steelers Coach Mike Tomlin, and members of the Steelers, pose with the Vince Lombardi Trophy in the East Room of the White House in Washington, Thursday, May 21, 2009. (AP Photo/Charles Dharapak)

President Barack Obama, center, talks with Pittsburgh Steelers wide receiver Hines Ward as he hands a military care package to Sen. Arlen Specter, D-Pa. on the South Lawn of the White House in Washington, Thursday, May 21,2009, where the president honored the Super Bowl champion Steelers. (AP Photo/Haraz N. Ghanbari)

President Barack Obama welcomes the Super Bowl champion Pittsburgh Steelers to the White House in Washington, Thursday, May 21, 2009. Coach Mike Tomlin is at right. (AP Photo/Haraz N. Ghanbari)

WASHINGTON - MAY 21: U.S. President Barack Obama poses with the 2009 NFL Super Bowl champion Pittsburgh Steelers in the East Room of the White House May 21, 2009 in Washington, DC. (Photo by Aude Guerrucci-Pool/Getty Images)

WASHINGTON - MAY 21: U.S. President Barack Obama (3rd L) poses with Pittsburgh Steelers Chairman Dan Rooney (C) and Head Coach Mike Tomlin (3rd R) during a picture with the 2009 NFL Super Bowl champion Pittsburgh Steelers in the East Room of the White House May 21, 2009 in Washington, DC. (Photo by Aude Guerrucci-Pool/Getty Images)

WASHINGTON - MAY 21: U.S. President Barack Obama (4th R) holds up a jersey as Pittsburgh Steelers as President Art Rooney II (3rd R), Chairman Dan Rooney (2nd R) and Head Coach Mike Tomlin (R) looks on at the South Portico of White House May 21, 2009 in Washington, DC. The Steelers deafeated the Arizona Cardinals in Super Bowl XLIII. (Photo by Aude Guerrucci-Pool/Getty Images)

WASHINGTON - MAY 21: U.S. President Barack Obama speaks during a meeting with the 2009 NFL Super Bowl champion Pittsburgh Steelers in the East Room of the White House May 21, 2009 in Washington, DC. (Photo by Aude Guerrucci-Pool/Getty Images)