Last week in San Antonio, 10 people died and nearly 30 more were hospitalized after experiencing extreme heat while being smuggled into the U.S. from Mexico. For nearly 30 years, Hipólito Acosta worked as a U.S. special agent tasked with busting smugglers and others who took advantage of immigrants. He joins us to talk about his experience, which he writes about in “Deep in the Shadows: Undercover in the Ruthless World of Human Smuggling” (Arte Publico Press).