Those of us in the Christian west are in the most dangerous times since the Western peoples worshipped idols before Christ was preached. I witnessed the goals of 'world socialism' through Communists being implemented in many western European countries back in the 1970's when I was stationed in Europe. The U.S. founders had the vision for the United States to be a free Christian people not under a European monarch, nor by the old styles of government that failed through history. They did declare the United States of America a "Christian nation", and regardless of what modern Socialists/Communists say the idea of separation between Church and state is not written in the U.S. Constitution.
Those who come to the United States of America fleeing from religious or political persecution are welcomed with the understanding that if they want to stay, they will eventually become 'Americans'. All early peoples that formed the early American colonies came from various European countries and cultures, even though they were Christians. They came for the cause of freedom, liberty to pursue happiness. That is the root idea of becoming an American. The various peoples with various cultures will always have those differences, but to be an American, together as one people regardless of all that, that was the founders' dream for the United States of America.
What does that mean then, becoming an American? It means respecting the laws and rights of the people through their elected representatives. It means respecting American history and the history of its foundation by its founders. It means being willing to serve the people in protecting America from foreign and domestic overthrow. It means becoming educated in one's rights as an American, and with the Constitution of The United States of America. It means attempting to live in peace with our fellow-man. It means respecting the order of law, and those who administer it and justice.
But if you look today at groups like Communists and Antifa, etc., they are doing just the opposite; not they only, but even some American officials in high places that want to reduce the operations of law enforcement, and support the continuance of riots in our streets. Those are 'crept in unawares', subversives, false-Americans who support the overthrow of the United States.