9. John Tyler
SRI Ranking: 37
Brookings Ranking: 36
Not much good can be said about John Tyler’s presidency. To be honest, he didn’t intend to be the presidency and only became one after the death of William Henry Harrison. Once he was sworn into office, he insisted that he has the right to use the full powers at his disposal and not just be a caretaker until the next elections. Most historians agree that, although he was legally well within his rights to do so, perhaps the country would be better served if he chose to remain a caretaker.