Joe Biden’s disastrous June 27 debate has sparked an ongoing meltdown within the Democratic Party that has yet to subside. His ABC News interview didn’t quell any concerns about his mental health. He might have accentuated them with the gross poll denialism exhibited by the president. There have been so many stories about discord, anger, anxiety, and Joe losing his mental faculties that the primary one of concern is getting lost in the noise: who is running the country? The tales of pervasive senility are not new or lost on conservatives; we’ve seen Joe and know he’s half-dead. But an...