A strong leader can do a lot in three years.
Yes, Kennedy certainly DID a lot in his "Thousand Days", didn't he?
He did a LOT of actresses, gangster's girlfriends, and Soviet spies.
He DID a lot of drugs (of course, they were just pain relievers for his bad back- which may even have been true. But we had a seriously drug-addled President, anyway)
He did a LOT of damage to this country, by getting us heavily involved in a no-win war in SouthEast Asia.
He did a LOT to bring us close to nuclear annihilation- he was clueless about Soviet missiles in Cuba until it was very nearly too late, then he played "chicken" with the lives of several billion people to redeem his mistake.
Oh yes, a first-rate President!! ROTFL