Most presidents are fact checked about their policies, few have been fact checked about whether they were awake. Joe Biden has had the most sleeping fact checks of any other president, but that’s because presidents usually don’t fall asleep at major events like visits by foreign leaders or commemorations of mass deaths in a recent natural disaster. Even at the best of times, it’s never that clear whether Biden is awake or asleep. But sometimes he closes his eyes and appears to drift off before stirring awake. And the media rushes in to argue that he wasn’t really asleep. This...