> for centuries until very recently most Americans readily recognized the value and necessity of recruiting foreign people into various posts.
You forgot to mention that, for those centuries, US immigration was effectively whites-only, until the 1965 Hart-Celler act (that politicians promised wouldn't change this!): https://en.wikipedia.org/wiki/Hart-Celler_Act
You forgot to mention that, for those centuries, US immigration was effectively whites-only, until the 1965 Hart-Celler act (that politicians promised wouldn't change this!): https://en.wikipedia.org/wiki/Hart-Celler_Act