President Trump has vowed to clamp down on immigration and undo Biden-era policies that he said were too permissive and blamed for allowing a large influx of undocumented immigrants. Here’s what we know about his policy changes.

President Trump’s executive orders on immigration face legal roadblocks. But he’s still sending U.S. troops to the southern border, and threatening to investigate local officials who stand in the way of arresting and deporting people.