CBS and ABC always present the president's side. They always grant him any TV time he requests for national addresses. The president's views are always given, even by Jimmy Kimmel and Stephen Colbert.
The networks report the president's side even when they are banned from the press room or insulted to their face. He calls them fake news and they still report what he says. That must mean what he says is fake.
I hope the last sentence was in jest. The reason that the media reports on Mr. Trump's every word is because he is the current POTUS and that position gives him a great deal of power. (In fact, he is trying to get more power than that which is allowed under our Constitution but I digress.) What many media miss when reporting on the current president (as well as his predecessors) is what actions he is taking. In other words, is he saying one thing and then doing another. That said, I very much am in agreement with you about those who oppose what the POTUS says not always getting air time, especially on commercial radio stations. However, most commercial radio outlets, if they run any news at all, run only about 2 minutes at the top of the hour for headlines and that's nowhere near the amount of time needed to air both sides of the issues surrounding any U.S. president's current and proposed policies.