Let's please not throw out the baby with the bathwater and dismiss all fact checking as political, biases, or agenda-driven.
Not agreeing on basic facts in the prime problem in our current political discourse. Disagreement is usually a good problem to have and leads to testing the complete problem space.
What we are seeing now, though, is the absence of the problem space exploration. Instead any discussion is just dismissed by calling the other party's information "fake news". In that fact-checkers are crucial.
Can the fact checkers be wrong? Sure. Could they have an agenda? Sure. Let's fix that. Let's not dismiss them outright as some of the comment here suggest.