America was founded as a Christian nation. From the Pilgrims at Plymouth Rock to Washington, Adams, Lincoln, our laws, morals, and culture come from Christianity. It’s not controversial, most people were Christian, the nation’s soul is Christian.
The First Amendment doesn’t erase the fact that America was founded by Christians, for a Christian people. It simply prevented the federal government from picking which Christian denomination would rule the others. The Founders assumed a Christian moral order, they didn’t think the nation could function without it. Removing Christianity from America’s foundation isn’t what the First Amendment was about, it’s a modern misreading.