There are upwards of 10 million unauthorized immigrants living in the US. Many of those immigrants are children or have children studying in schools throughout the country. For them,fear of deportation and family separation is a constant reality. Students at El Colegio High School in the Midwestern city of Minneapolis know that feeling, so the school has prepared its students and staff for when the immigration agents come knocking. Also, find out how Trump's hard-line immigration policies build on the history of former US presidents; we meet the teachers of University Open Air where classes are all taught by immigrants; author Adaobi Tricia Nwaubani talks about the legacy of Nigerian slavery and how it affects people’s lives today; and the story of a Uighur family whose members fled China and now own a restaurant in Boston. (An exterior view of U.S. Immigration and Customs Enforcement (ICE) agency headquarters is seen in Washington, DC. Credit: Alex Wong/Getty Images)