Trump mentioned it in the interview he did with Hannity the night before the Super Bowl. He felt bad for the other candidates in that they were changing the rules for 'little Mike'. The DNC was stealing the election from Bernie again. I also heard from Bernie on the radio in the truck today that he was fighting the establishments of both parties.
Here's the interview with Trump where he discusses the opposition and the changes being brought in for 'little Mike', including his being able to stand on a box at the debates:
http://youtu.be/AuO2ZQBN9gI