I asked a question a minute ago about a fact check, and considered adding a fact-check tag. I don't see one, but was wondering if it were a valid thing to add to politics.se given the number of times statements of questionable veracity are made by politicians (leading to inevitable questions on this website). I see it similar to the "story-identification" tag on sci-fi.se, where it isn't specific to the question, but rather indicates a different type of question.
The purpose and scope of this SE is not to check facts, but rather to answer questions about politics and political processes. Such questions are clearly in the wheel house if Skeptics SE And should be referred there if they are good questions.
Most of the "Fact Check" questions I have seen here have been "Please validate my opinion" questions. Those belong no where on SE.