Good points. Except another President let some crazy mullah take over Iran over 20 years ago. That may be a close second
Yes, I agree that Jimmuh Carter and Bubba Clinton raced each other to the bottom to be known as Worst President of the United States.
But the loss of China (by failing to back Chung Kai Shek) was a mistake of massive proportions for a president who was not always too bad.