I don't believe the President should have any voice in the matter of football as professional teams are privately owned, and the players are choosing to play and getting paid for those "hard hits." In addition, he should be in the White House working on all of the problems our country is facing instead of out there "campaigning." The election is over; he won.
And so, he needs to do the job that America elected him to do which is not spouting his opinions about football.