The title of Jason L. Riley's new book helps explain why it has proven so controversial: Let Them In: The Case for Open Borders.

Let Them In is as exhaustively researched as it is eminently readable. Riley, a member of The Wall Street Journal's editorial board runs through the six biggest anti-immigration arguments at play in today's heated political world—and finds them wanting.

Riley sat down earlier this summer with reason.tv's Nick Gillespie to discuss the leading myths about the causes and effects of immigration.