And what makes a scientific consensus political in you opinion?

The vast majority of us can not understand scientific research.   Political people count on that ignorance.  Political people frame a scientific statement as biased to win opinion of those that can't grasp the proof.    The bias at work is mostly from non-science folks who don't like the conclusion.

*there is scientific fraud - most is caught by other scientist who can recognize the problem in the research or conclusion.   Lying is a fatal flaw in a career of science, it can get you elected in a political life!