A look at sanctuary and immigration policy in the Trump era. 11 million. That is the estimated number of people living in the U.S. who are undocumented. During his first weeks in office President Donald Trump signed orders to build a border wall, ban travel from countries with largely Muslim populations, and deny federal funds to sanctuary cities and states. In this show a look to previous administrations to see how they treated people who were undocumented, and how immigrant movements of the past responded. Produced by National Radio Project.