My history instructors, from grammar school through university, including any number of bat-guano crazy liberal idiots, were pretty adamant that we began the overthrow of monarchy hereabouts in 1776. Yet our current philosopher-king manchild seems pretty certain he can rule by fiat, and has done so for 5 years while Congress both metaphorically and probably in actual fact collectively sits with its thumbs inserted in the space normally reserved for their craniums to be stored.
So I'm pretty certain somebody is lying about something.
If memory serves, rule by fiat decree didn't even work out for the psychotic loon in the Harry Potter books. But as always, unlike real life, fiction has to make sense.