Censorship In Action
Based on everything I have read and based on my own experience with Hollywood and its treatment of history, I think that I would probably share opinion of all those who consider Reagans to be politically motivated hatchet-job rather than serious attempt to recreate history.
CBS executives are, in most likelihood, quite right to consider the mini-series as biased.
Yet, pulling the mini-series off the air is even bigger mistake than making it. Even if the series offends political sensibilities of large sections of American audience, denying them opportunity to feel offended is even greater offence. This way, Reagans would only receive more fame than actually deserves.
Interestingly enough, leftist Democrats who are up in arms over CBS censorship and express concerns about this case being precedent for future limitations of free speech via political pressure, were conspicuously quiet when CBS altered the content of Hitler: Rise of Evil in order to silence Jewish critics, concerned over alleged portrayal of German dictator as "too human".