That's a really cute poem that won a writing contest. It does not and never has represented US immigration policy.
"On the Statue of Liberty it says: "Give me your tired, your hungry, your poor." Well, it's Americans who are tired and hungry and poor. And I say, until you take care of that, close the f**king book. 'Cause we're losing. We're losing our rights to pursue our destiny. We're losing our freedom. So that a bunch of f**king foreigners can come in here and exploit our country. And this isn't something that's going on far away. This isn't something that's happening places we can't do anything about it. It's happening right here..." - American History X