A 2006 poll of historians ranked Kennedy's decision to authorize the Bay of Pigs invasion as the eighth-worst mistake made by a sitting president.
SOURCE:
https://en.wikipedia.org/wiki/Presidency_of_John_F._Kennedy I wonder where Bidens fiasco will come in. Fleeing civilians falling off US military planes? I think he has unfortunately probably outdone Kennedy.
The full list of the top 10 worst mistakes of a US President are here:
1: President James Buchanan, for failing to avert the Civil War, according to a survey of presidential historians organized by the University of Louisville's McConnell Center. Scholars who participated said Buchanan didn't do enough to oppose efforts by Southern states to secede from the Union before the Civil War.
2: Andrew Johnson's decision just after the Civil War to side with Southern whites and oppose improvements in justice for Southern blacks beyond abolishing slavery.
3: Lyndon Johnson earned the No. 3 spot by allowing the Vietnam War to intensify.
4: Woodrow Wilson's refusal to compromise on the Treaty of Versailles after World War I.
5: Richard Nixon's involvement in the Watergate cover-up.
6: James Madison's failure to keep the United States out of the War of 1812 with Britain.
7: Thomas Jefferson's Embargo Act of 1807, a self-imposed prohibition on trade with Europe during the Napoleonic Wars.
8: John F. Kennedy allowing the Bay of Pigs Invasion that led to the Cuban Missile Crisis.
9: Ronald Reagan and the Iran-Contra Affair, the effort to sell arms to Iran and use the money to finance an armed anti-communist group in Nicaragua.
10: Bill Clinton's Monica Lewinsky scandal. Many scholars said it belonged at No. 10, saying that it probably affected Clinton's presidency more than it did American history and the public.
SOURCE:
http://usatoday30.usatoday.com/news/washington/2006-02-18-presidential-goofs_x.htm