Presidential busts: The worst of all: Barack Obama

◼ Editor's note: It's a presidential election year, so we thought we'd weigh in with our list of the five worst presidents. We start with, yes, the current incumbent. - UT San Diego

◼ The runner-up: Jimmy Carter (1977-1981)
◼ Third place: James Buchanan (1857-1861)
◼ Fourth place: Richard Nixon (1969-1974)
◼ Fifth place: Andrew Johnson (1865-1869)