It’s easy to dismiss nativist rhetoric as mere Trumpy “locker room talk.” But when it comes to immigration, deportation and even detention, rhetoric about foreigners and violent invaders is actually a legal long game. Toward the end of the summer of 2023, Katherine Yon Ebright, counsel in the Brennan Center’s Liberty and National Security Program, noticed that rightwing anti immigration groups and the Trump campaign had started talking in earnest about using a very old law with a very dark history, in order to do very chilling things to immigrants. She started researching the Alien Enemies Act of 1798, the sole operative part of the notorious Alien and Sedition Acts. By October 2024, Donald Trump was invoking the statute in most of his stump speeches, saying he intends to use it to carry out the mass deportations of non-citizens, without due process and with domestic law enforcement deployed to full effect. We are already seeing Texas trying to use the language of “foreign invasion” to achieve exactly these ends. On this week’s Amicus podcast, Dahlia Lithwick asks Katherine Yon Ebright to help the rest of us catch up with her deep dive on this dangerous law, and to explain why we should take the threats to use it literally and seriously. Want more Amicus? Join Slate Plus to unlock weekly bonus episodes with exclusive legal analysis. Plus, you’ll access ad-free listening across all your favorite Slate podcasts. You can subscribe directly from the Amicus show page on Apple Podcasts and Spotify. Or, visit slate.com/amicusplus to get access wherever you listen. Learn more about your ad choices. Visit megaphone.fm/adchoices