Presidents have called the Clubhouses of the winners as long as I can remember!!
This was the first Super Bowl where the winning coach did not receive the traditional call from the President of the United States. Winning teams are now rewarded a trip to the White House to be congratulated by the president personally.
We want Obama to act more like Reagan. Good for Reagan, good for Obama. Calling the winning coach after the game was an irritating practice. Much better to invite them to the White House for a photo-op.