Citing ProPublica's investigation, House Democrats led by Rep. Lou Correa are pressing the Trump administration to explain why hundreds of U.S. citizens have been detained by immigration agents and how it verifies citizenship, in an October 2026 letter to DHS Secretary Markwayne Mullin. ProPublica counted more than 500 citizens detained, roughly a dozen deported (mostly children), and 36 held at least a day without contacting a lawyer or family; DHS denies arresting citizens and calls the operations highly targeted, while Rep. Teresa Leger Fernández introduced a bill easing citizens' suits for wrongful arrests.