President He Most Closely Resembles:
It's no coincidence that most of our greatest presidents (according to historians) also happened to be the presidents who were tasked with navigating America through extremely difficult times. Washington had the creation of the Union, Lincoln had the Civil War, FDR had a war and the Depression. There's no telling what kind of impact these presidents would have made had they presided over times of peace. They needed these catastrophes to thrust them into greatness, because it is whether or not a man flinches when faced with turmoil that determines his true strength.
Life is just choices, man.
The alien invasion in Independence Day was President Thomas Whitmore's Great Depression, Civil War, and World War II all rolled into one, and the man did not flinch.
Whitmore navigated us through a disaster of unprecedented magnitude, and he did it all while his wife was dying. The man was unflappable. He kept his cool because America would not be able to hold itself together if it didn't have a strong leader assuring the country that everything was going to be fine.