By "we" you can only mean Christians. The US is no longer a Christian country. The country has left God for idols and God is visiting his wrath. God used the Babylonians to visit his wrath against countries not under the covenant of the law, such as Egypt. So it's no surprise he would use an unsaved civilization such as Islam to visit his wrath against the US as a consequence of abandoning his.
There are MANY praying Christians in America and God is not mad at America or anyone else because the Bible says Jesus has ALREADY died for the sins of THE WHOLE WORLD (1 John 2:2). God would be unjust to have judged all the sins of the whole world on the body of Jesus Christ and turn around and judge the same sin now again now. That would be patently unjust and God is not unjust but righteous.