Sure, presidential historians have their own rankings of presidential greatness, but President Trump grades on a different scale, according to Late Night's "Donald J. Trump's Guide to U.S. Presidents, Vol. 1." Trump, naturally, ranks No. 1 and his predecessor, Barack Obama, was barely worth a mention, but Trump also weighed in on Grover Cleveland ("He always cracked me up when I would see him on Sesame Street"), George Washington's wife, Richard Nixon, George H.W.