Donald Trump won the presidency in significant part by pledging to do something that his predecessors had already mostly accomplished: building a big, beautiful wall on the border with Mexico. For liberals and centrists, the wall now shares a toxic association with Trump. But until recently, militarizing the border with Mexico was accepted as a core piece of the commonsense, bipartisan establishment immigration and drug policy agenda. Today, my guest is Peter Andreas, a professor at the Watson Institute for International and Public Affairs at Brown and the author of seminal book Border Games: Policing the US-Mexico Divide. Thanks to our supporters at University of California Press: http://www.ucpress.edu/