Perhaps, but my hope is in eternity, not that the United States of America will turn from its wicked ways. I'm just a pilgrim passing through the evil and the fire. If the U.S. is destroyed (and me with it), then to die is gain. The U.S. is like the Titanic - eventually it will sink. I feel sorry for all of those who are placing their hopes on the U.S. Govt and U.S. military, who can't protect them.
Perhaps you are right, God could spare the U.S. due to the tiny remnant of rigteous people that are here (I doubt there are "millions" of them). There are many "professing" believers who vote for baby-killing democrats, placing Mammon ahead of Christ. Woe unto them.
But in II Chronicles 7:14 the good Lord doesn't address the majority. As I read it, He addresses those who are called by His name, however few or large in number they may be.
Our hope lies away off there, over yonder across Jordan that is true ... but we have to walk on this side for a time and we can still make the best of that walk in His will.