I understand there is a different culture in USA, where you don´t have to strive after telling the whole truth - just YOUR truth. Then it´s up to someone else to tell the other side of the story, and you´re free to disregard their version of the truth.
Fox News is clearly conservative and biased, not just in their reporting, but also in their editorial line.
The documentarist Michael Moore is just as biased in the opposite direction.
I don´t cosider Fox News a news outlet and I don´t consider Moore a documentarist.
They are propagandists, and it´s awful to watch. People in their position should strive to be "fair and balanced", and not just claim to be.
But at least they pursue some sort of truth.
Trump is a liar, he can´t help himself. And the funny thing is, that he doesn´t have to. Unless some people vote for him for entertainment value (and I hope not), then I think he could be in the same position as today, without lying. And if not - then he does not deserve to be there.
If your message is not strong enough to be sold without lying, then your message is not strong enough.
(And the disclaimer under Trumps Tweets were not about his opinion. It was about his "facts". Opinion and fact - not the same thing.)