Let me say upfront that I believe God has and has always had a special interest in the Jewish people. I am not Jewish myself but through reading the bible, realize He has a special love for them. Now, I know that will irritate some. Nevertheless, I see this expressed throughout the word of God.
Yet, God is a righteous God and He does judge whether we want to believe it or not. Starting with the "flood", on to Sodom and Gomorrah, nation after nation has been judged for their wickedness. Israel was not excluded and nor will America be.
In the case of Israel, Jeremiah (one of their own) prophesied God's judgment against them. He was (as well as other prophets) considered the villain. Still, what he said came to pass, not what the smooth talkers spoke about.
I see the same attitude in America. Although I never considered us a "chosen" people, I did see parallels between those that are belittled for suggesting judgment and those prophets of old. At the same time, I see the smooth talkers prevailing. There is all this "God Bless America" but meanwhile we ignore what matters to God most and for the most part want nothing to do with Him.
In Isaiah 9:9-11, we see a people determined to build back up what God has meant to be brought down. It is as He says, because of the "pride and stoutness of heart". America has the same spirit when it comes to rebuilding the WTC. We never stop to think that maybe, just maybe, the Lord allowed this in order to wake us up to repentance. Repentance though begins individually for God says, "All have sinned and fall short of the glory of God". I believe this and even if my country continues on the road of destruction, I have peace in my own soul.
As far as your friends go, because they are a "chosen" people, they will always be the "enemy" in this world's point of view because the world is at enmity with God.