I've long felt that FDR was the worst tyrant the USA has ever had. If more people read about his presidency, they'd be shocked to see how he trampled on people's rights in order to run those failed economic policies. Thank goodness the NRA was ruled unconstitutional by the SCOTUS (of course, that led to King FDR's attempt to enlarge and pack the court).
FDR is the worst, followed by LBJ and Hussein IMO. But actually, our current woes can probably be traced back to FDR's commie-riddled administration which set up an anti-American apparatus that still operates.