What’s the point of having media fact-checkers when they themselves need to be fact-checked?

PolitiFact awarded a “mostly false” rating this week to former U.S. Air Force fighter pilot Rep. Martha McSally, R-Ariz., for a campaign ad that says of her Senate opponent, “While we were in harm’s way in uniform, [Rep. Kyrsten Sinema, D-Ariz.] was protesting us in a pink tutu and denigrating our service.”