President Barack Obama throws a football on the field at Soldier Field following the NATO working dinner in Chicago, Illinois, May 20, 2012. (Official White House Photo by Pete Souza)

President Bill Clinton is hit in the face with the football while breaking up a pass play during a touch football game on Dec. 31, 1993, in the beach at the Hyatt Regency Hotel in Hilton Head Island, S.C. (AP Photo/Doug Gilmore)

President Bush throws a football as he stands with Cleveland Browns quarterback Jeff Garcia, right, during an impromptu stop at the team's training camp in Berea, Ohio, Saturday, July 31, 2004. President Bush is making a campaign Bush tour through Ohio Saturday and will finish the day in Pittsburgh before returning to Washington. (AP Photo/Charles Dharapak)

Dwight Eisenhower is shown kicking a football during a practice session at West Point in 1912. (AP Photo/The Eisenhower Library)

Abilene, Kansas high school football team of 1910 on which Gen. Dwight D. Eisenhower played while a post-graduate student in preparation for West Point. Left to right, top row: Ralph Lucier, Frank Madden, Dwight D. Eisenhower, Earl Briney, "Six" McDonald, Howard Funk. Second row: Orin Snyder, coach Raymond Sare, Ames Rogers, G.N. Hoffman, and Prof. Down. Bottom row: Dean Achers, Charles Barber, Earl Marrifield, Ron Coleman, Carl Nicolay. (AP Photo/The Eisenhower Library)

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)

Richard Nixon is shown as a member of the Whittier College football squad in Whittier, Calif. Years later as President Richard Nixon, he declared himself for pro football "all the way", and told his attorney general to offer the NFL league a quid pro quo: Televise home playoff games, and the president will prevent legislation requiring regular-season home games to be aired as well. NFL Commissioner Pete Rozelle turned him down. (AP Photo)

John F. Kennedy, 16, second from right, front row, is shown in a team photo of the junior football team at Choate School in Wallingford, Conn., in 1933. (AP Photo)

Gerald Ford is shown as he played football for the University of Michigan in 1934. He won three varsity letters as a lineman and was voted most valuable player in 1934 at center for Michigan. He later took part in the Shrine Bowl and Pro-All Stars games. At Yale University Law School, he served as assistant varsity football coach to Ducky Pond and freshman boxing coach. (AP Photo/U. of Michigan)

Actor Ronald Reagan poses in a scene from the 1940 film "Knute Rockne -- All American," in which Reagan portrayed Notre Dame halfback George Gipp. (AP Photo)

Gov. Ronald Reagan and son, Skipper, both football fans, play touch football in the backyard of their Sacramento home on Nov. 15, 1971. Reagan played the role of football great George Gipp in Knute Rockne All American during his acting career. (AP Photo/Walter Zeboski)

Vice President George Bush tosses a football back to members of the traveling press corps after arriving in Houston on Monday, Nov. 7, 1988. Bush, in the last full day of campaigning, returned to Houston where he will vote on Tuesday. (AP Photo/Eric Gay)

U.S.President George Bush tosses a football as he walks around the South Lawn, Saturday, Jan. 21, 1989 with family members in Washington. From left are Bush, Jenna, 7, Noelle, 11, Barbara, 7, and Margaret holding Marshall, 2. (AP Photo/Doug Mills)

Presidential candidate Bill Clinton and his running mate Al Gore play with a football at Chicago's Midway Airport, Tuesday, Oct. 21, 1992 before their departure. (AP Photo/Stephan Savoia)

President-elect Bill Clinton, playing defensive safety, breaks up a pass in a pickup game of touch foot ball on the beach at Hilton Head Island, S.C., Jan. 1, 1993. (AP Photo/Bob Strong)

Herbert Hoover, second row, center, in suit, treasurer of the 1894-95 Stanford eleven that defeated the University of Chicago, 12-0 in the first big intersectional grid battle. (AP Photo)

Franklin D. Roosevelt, front row, middle, when he was a member of the Groton School football team, circa 1899. (AP Photo)