The Supreme Court blocks Trump's bid to resume deportations under The Alien Enemies Act of 1798. And the GOP defies Trump, striking down a bill advancing his agenda. Rep. Gwen Moore, Rick Stengel, Prof. Larry Glickman, and Tony Ortiz join Ali Velshi. 

Democrats say the CBO finds Trump's budget bill contains $500 billion in Medicare cuts. Also, Senate Democrats question Trump's IRS pick on ethical issues. Plus, Reuters reports $98 million in U.S. food aid is rotting in warehouses after the Trump-Musk cuts to USAID. And Jonathan Capehart discusses his new memoir, "Yet Here I Am: Lessons from A Black Man's Search for Home." Rep. Brendan Boyle, Sen. Catherine Cortez Masto, Jonathan Landay, and Jonathan Capehart join Lawrence O'Donnell.