He doesn't need a cognitive test despite he has more gaffes in a week than Trump did in 4 years.. but mysteriously he had to have a cognitive test which he easily passed. There is a very special reason Biden won't have to do one. *He would immediately fail. Even on a good day where he could string together 3 sentences without forgetting everything and speaking in run on paragraphs he is trying to but cannot read on the teleprompter.* The most unpopular President and weakest speaker and leader in US history.