What the Fallacy?!
Argument from Ignorance
The Definition
Asserting that a political conspiracy is true because it hasn't been proven false.
The Explanation
Conspiracy theories thrive in politics using this fallacy. The inability of authorities to prove a negative is taken as proof that the conspiracy is real.
Political Example
Since the intelligence agencies haven't definitively proven that the deep state *isn't* manipulating the weather, the pundit claimed it must be happening.