Why the US has so many undocumented immigrants. Subscribe to our channel! goo.gl/0bsAjO Immigration looked very different before 1996, when President Bill Clinton signed the Illegal Immigration Reform and Immigrant Responsibility Act (IIRIRA). The law was supposed to stop undocumented immigration by increasing enforcement and punishing people for being in the US undocumented. Instead, it incentivized people to stay in the US — and the undocumented population doubled. When researching this story we used a lot of great resources. Here are a few of the most helpful: This collection of articles on IIRIRA by the Center for Migration Studies explains many angles on the law itself, the politics of the time that led to its passing, and the ongoing impact: cmsny.org/publications/jmhs-sc-iirira Douglas S. Massey at Princeton and his co-authors have written about how border enforcement backfired, including in this 2016 paper: spia.princeton.edu/system/files/research...