"Give me your tired, your poor, your huddled masses yearning to breathe free."   -- Emma Lazarus' sonnet, New Colossus

• They apply only to limited numbers
  (i.e., quotas) of people from selected
  groups.
   
• They were originally valid when
  the nation still had vast undeveloped
  lands virtually free for the taking.
   
• Now that the "new nation"
  ponzi scheme has burst

  ... a growing number of people*
  are saying "we cannot afford
  to take in all of these people."