>> joining us now on book tb is benjamin powell he is the executive director of institute at texas tech university. he is the author of this book wretched refuse? the political economy institutions, professor powell you over the book with this immigration restriction to prevent exchanges between would-be immigrants and people residing in destination countries are likely the largest policy induced economic distortion in our global economy. could you explain that? >> sure, in the post-world war ii years loosing dramatic dramatic reductions and barriers to goods and services and capitol flows around the world. since the early 20th century with the increased restrictions of people, laborers around the world. in response to this people move between them their labor to create value for others in a global economy. when they move from one country to another the productivity goes up massively. economists estimate we completely eliminate various labor it would double global outbreak. there is something that comes even close to that. >> what is the policy solution your view? >> this book explores

. >> joining us now on book tb is benjamin powell he is the executive director of institute at texashe is the author of this book wretched refuse? the political economy institutions, professor powell you over the book with this immigration restriction to prevent exchanges between would-be immigrants and people residing in destination countries are likely the largest policy induced economic distortion in our global economy.

booktv.org.h these >> joining us now on book tb is benjamin powell he is the executive director of instituteversity. he is the author of this book wretched refuse? the political economy institutions, professor powell you over