The leader of the U.S. Olympic Committee says in a letter he was not aware of the Larry Nassar sex-abuse allegations before law enforcement got involved, and that he had no knowledge of a settlement between USA Gymnastics and 2012 Olympic champion McKayla Maroney in a case involving the now-imprisoned former team doctor. CEO Scott Blackmun sent the letter, a copy of which was obtained by The Associated Press, to key administrators and others in the ...