Keyword: most. And even those come for money opportunities, not for anything related to preferring the lifestyle and/or culture. Be assured people don't leave Western Europe for the US because of "freedom" or better "legal rights" there (which is what we were discussing)...
Not to mention that the US is below in people immigrating to it internationally (net immigration / capita) compared to:
Luxembourg, Switzerland, Australia, Austria, Italy,
Sweden, Germany, Belgium, Great Britain, Denmark , and others...