North America is not a "melting-pot" of cultures, but rather a trash-heap of the odds and ends of them all, not moldable, but generally organized along the lines of a democratic republic trending slowly toward mobocracy with the end being anarchy (which we are seeing plenty of now).
I believe anything truly Christian will be removed, and what is "left behind" will be reorganized by the global "catholic" principle (which is the operative concept of most North-American denominalizationalism) led by the Antichrist with his chief priest of Rome leading the takeover of the mid-East. And what is then still "united states" will be in the forefront with its technology and monetizing system.
Is Francis a forerunner to this?
Maybe.
Will revived orthodoxy figure into it?
Probably.
Will true Christians be involved?
No, they won't even be around anywhere on the Earth.
But the dollar will, necessary for buying and selling goods and influence.
If you can't buy or sell without the number; I'd imagine that 'dollars' will be obsolete as ONLY digital (tracking) transactions will take place.