Dorival was only appointed 14 months ago, but a 4-1 defeat against rivals Argentina proved to be his last game.
Experts say there are parallels between attempts to expel pro-Palestinian student protesters and Bush-era deportations.
The six-time winner beat Grigor Dimitrov 6-2, 6-3 to reach his first Miami Open final since 2019.
A turbulent week off the field sees Real Madrid return to LaLiga action against Leganes after the international break.