Freedom is what attracts so many people to the United States, that grand hope that there would be the freedom of religion, the freedom away from the tyrannical governments that govern them, a land where they would have the freedom to choose. And so, they came here, and they came by the boatload.
"We hold these truths to be self-evident that all men were created equal and that they were endowed by their Creator with certain inalienable rights, among these, life, liberty, and the pursuit of happiness."
The nation that those immigrants, our ancestors came in to was a nation that was built upon those principles and many observed it.