Philippe Legrain argues we should welcome immigrants.

Immigration is a divisive issue. Journalist Philippe Legrain argues that we should welcome immigrants for a variety of reasons. Legrain says in an open world, more people move across borders. Immigrants, he says, enrich the lives of their new countrymen and the families they often support back home. He spoke at a Cato Institute book forum on his book, Immigrants: Your Country Needs Them.