 They did not need to monitor the president's public appearance because under his leadership, the country had returned to the kind of normal state in which members of a first world democratic society had the privilege to forget about the president for hours or days or even weeks at a time. Trump required constant observation. What did he just do? What would he do next? Oh, God, what was he doing right at that moment? Biden could be trusted to perform the duties of his office out of sight.