President Barack Obama kicks a soccer ball during a stop at the Tully Junior-Senior High School soccer practice in Tully, N.Y., Aug. 23, 2013.

President Barack Obama kicks a soccer ball during a stop at the Tully Junior-Senior High School soccer practice in Tully, N.Y., Aug. 23, 2013.

President Barack Obama talks with the 2013 Network for Teaching Entrepreneurship student winners in the Oval Office, Nov. 22, 2013.

President Barack Obama talks with the 2013 Network for Teaching Entrepreneurship student winners in the Oval Office, Nov. 22, 2013.

President Barack Obama is greeted by Bill Russell during a stop to view the statue of Russell at City Hall Plaza in Boston, Mass., Oct. 30, 2013.

President Barack Obama is greeted by Bill Russell during a stop to view the statue of Russell at City Hall Plaza in Boston, Mass., Oct. 30, 2013.