The Supreme Court ruled that Lisa Cook can remain on the Federal Reserve board, citing due process violations in her attempted firing. Other rulings upheld a Mississippi mail-in ballot law and restricted police geofencing. The episode also covers experimental nuclear reactors nearing a July deadline, a dangerous heat wave during the US 250th birthday, and new federal student loan repayment limits. Finally, Bill Maher received the Mark Twain Prize amid controversy over the Kennedy Center.