> “ive me your tired, your poor, > Your huddled masses yearning to breathe free, > The wretched refuse of your teeming shore. > Send these, the homeless, tempest-tost to me, > I lift my lamp beside the golden door!

The U.S. was founded as a nation of immigrants, and has a cultural history of being exceptionally immigrant-friendly (compared to other nations), especially with regard to immigrants without much means.

I don't believe other nations have any obligation to follow this example. On the contrary, they should be able to set whatever immigration policies make sense for them. But this model of letting in poor immigrants, letting them do the work that nobody else wants to do, and letting their kids become net contributors, does seem to have benefited the U.S. greatly over the past few centuries.