Western Michigan University Economics Professor Susan Pozo says that when the debate over immigration heated up in 2016, it was important to hear from economists who had studied the issue. She says several of them came to the Western Michigan University campus during the 2016-17 academic year for the Economics Department’s Werner Sichel Lecture series. Pozo is the editor of The Human and Economic Implications of Twenty-First Century Immigration Policy . The book published by the Upjohn Institute