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's Nick Gillespie to discuss the leading myths about the causes and effects of immigration.
For a longer 25 minute version. Click on the video below.

To download MP3s of the short and long versions of these interviews, go here.