Trump is sidelining his top Border Patrol commander. What to know.

Changes are coming to immigration operations in Minnesota after President Trump said he and Governor Tim Walz had a productive phone conversation. Politico reports that border czar Tom Homan will take over operations, while the top Border Patrol commander is being demoted. As calls for accountability for the immigration agents who shot and killed Alex Pretti and Renee Good grow, prosecutions might be hard to come by. Jack Queen of Reuters breaks down the longstanding protections in place that shield law-enforcement officers. Some parents allege that social-media apps designed to keep teens coming back are responsible for a mental-health crisis among young people. The Washington Post’s Naomi Nix joins to discuss lawsuits filed by parents over the issue and why they’ll be tough cases to win. Plus, a deep freeze will set in as the nation digs out of this weekend’s winter storm, leading pediatricians are breaking with the CDC on childhood-vaccine guidance, and why virtually no one knows how WD-40 is made. Today’s episode was hosted by Shumita Basu.