Satan can have a great influence.
But...God doesn’t trifle with him. He sends an Archangel.
And FWIW, you might want to spend an hour reading Maccabees. Particularly from 3:42.
God helps the just.
End Times eschatology does not reflect the presence of the US as a power on the world stage. You presume that it is God’s will that this nation return to greatness. I don’t.