The has been much media coverage over the past few years about immigration, particularly illegal immigration, to the US.What is the impact of increased immigration on labor markets?on workers? on consumers? on the economy as a whole?How does recent immigration compare to historical immigration in the US?(How does recent economic growth compare to historical economic growth rates?)(positive questions)Should we allow more legal immigration into the US? (should we stop immigration completely?)Should current working undocumented immigrants remain undocumented or be provided a mechanism to legalize their status? (normative questions)