"This wonderful and highly readablebook provides the facts and sets the record straight about the hot-button issue of immigration and is a must-read for anyone who cares about this important issue. Immigrants benefit from coming to the US, but so does the country from the diversity, skills, and energy that they bring. Remarkably, most existing evidence suggests that native workers are not harmed by immigrants."–Daron Acemoglu, Institute Professor of Economics, MIT, and coauthor of Why Nations Fail and The Narrow Corridor