All we heard about Biden from the day after his debate with Trump until the day Biden dropped out of the race, was how poorly he did during the debate. Questions about his mental fitness were unending. Very little about Trump's poor debate performance is discussed.

Also notable: interrogations into Biden's mental fitness ended immediately when he dropped out of the race. But he's still president! If his mental fitness was legitimately in question, journalistic outlets would stay on the story until he left the presidency.