Does the Commision on Presidential Debates own a monopoly?
The current reality is that we have a two-party(insert sarky comment here) system in the United States. My impression is that they have done a reasonable job trying to stay impartial at least between those two parties. When they start to deviate from that, it will be time to act.
Feel free to give examples when they have deviated.
According to Wikipedia:
The Commission on Presidential Debates (CPD) is a nonprofit corporation established in 1987 under the joint sponsorship of the Democratic and Republican political parties in the United States.