Can you explain where America is in biblical prophecy, if at all?

America is not mentioned in the Bible at all. Biblical prophecy, to the extent that we understand its meaning, applies to us as human beings, not necessarily to us as Americans. Of course, our country must strive to create a just society and build a culture of life, as the Holy Father has admonished us; but that applies to all societies and countries at all times, in the past, present, and future.