RANKED: The greatest US presidents, according to political scientists

44: Donald Trump

43: James Buchanan

42: William Harrison

41: Franklin Pierce

40: Andrew Johnson

39: Warren Harding

38: Millard Fillmore

37: John Tyler

36: Herbert Hoover

35: Zachary Taylor

34: James Garfield

33: Richard Nixon

32: Benjamin Harrison

31: Chester Arthur

30: George W. Bush

29: Rutherford B. Hayes

28: Calvin Coolidge

27: Martin Van Buren

26: Jimmy Carter

25: Gerald Ford

24: Grover Cleveland

23: John Quincy Adams

22: William Howard Taft

21: Ulysses S. Grant

20: James Polk

19: William McKinley

18: James Monroe

17: George H.W. Bush

16: John F. Kennedy

15: Andrew Jackson

14: John Adams

13: Bill Clinton

12: James Madison

11: Woodrow Wilson

10: Lyndon B. Johnson

9: Ronald Reagan

8: Barack Obama

7: Dwight Eisenhower

6: Harry Truman

5: Thomas Jefferson

4: Teddy Roosevelt

3: Franklin Delano Roosevelt

2: George Washington

1: Abraham Lincoln