Buchanan? James Buchanan?
I’ll have to study up on what makes Buchanan the worst. IMO, Lyndon Baines Johnson is the worst president ever. And day by day Obama is closer to overtaking him.
But thanks to LBJ we have the Vietnam War debacle, but much worse we have the after effects of his Great Society which still to this day is tearing apart the country.
Why historians pick Buchanan is because of what he did to usher in the Civil War. He weakened the army by sending them west on idiotic missions to war against Indians and Mormons, creating or ramping up hostilities where they were either non-existent or marginal before (with the exception of the Comanchee). He p*ss*d away opportunities to keep southern states in the union which had little appetite for succession (Virginia, North Carolina, east Tennessee). He generally treated the presidency like a plaything to live high on the perks of the office and treat his Nancy Boy as royal family.