The xenophobia over immigrants in this thread is appalling. Many of these so-called "third world" immigrants are wealthier, more successful, and better educated than the average American.
For instance, Asian-Americans, on average, have a higher annual household income, higher educational attainment, higher IQ, and greater occupational prestige than the average American—including whites. Just look at all the Asians in Ivy League universities. These people are literally wealthier, smarter, and more educated (read: better) than you (working-class whites). And yet, you have the gall to be disgusted by their presence?
You people should consider yourselves lucky America is still able to attract top-tier talent from all over the world.