First, it is not Constitutional. The US imposed term limits after the end of a successful 4 terms under FDR, because of the risk that an abusive person might come to power. Enter Donald J. Trump, the epitome of an abusive person. To give that much time to a liar and conman who is already doing damage is utter insanity. Of course, an obese old man with heart problems wouldn’t last that long anyway, but that isn’t the point.