Who Are The “Fact-Checkers”?

Who are they? What credentials do they have? Who checks on the “fact-checkers” to make sure they themselves are factual and accurate? What are the standards for “fact-checking”? Impartiality? Honesty? Full disclosure of…connections…relationships…money interests…? Is it the really the job of tech platforms to limit speech and content for “fact-checking”? Why? What if some people …