Where in the Bible does it say “if you bless my people I will Bless you.” Our nation has been blessed because we have supported the Jewish people and Israel all these years up to now. If we pressure them to give up more of their land for peace and no longer seem to support them, will God judge us for this action?
The verses you’re looking for are Genesis 12:2-3. God is speaking to Abraham. “I will make you into a great nation and I will bless you; I will make your name great, and you will be a blessing. I will bless those who bless you,and whoever curses you I will curse; and all peoples on earth will be blessed through you.”
As for judging the US, there are those who’ve correlated the “natural” disasters we’ve suffered in the last few years with times we’ve pressured Israel to give up land. Their findings defy coincidence. The conclusion can only be that the judgment has already begun.