Today, the Supreme Court hears arguably the biggest case of the term. But precisely what is being decided is up for debate. There’s a constitutional question about birthright citizenship. And then there’s a procedural question with wide-reaching implications: Can lower-court judges block federal policies with nationwide injunctions? Depending on how the high court rules, one of the main impediments preventing President Donald Trump from implementing his policy agenda could disappear. Playbook managing editor and author Jack Blanchard and chief Playbook correspondent Dasha Burns talk through the case and survey the potential fallout. Meanwhile, Vladimir Putin is a no-show for peace talks with Ukraine in Istanbul, and Trump’s Mideast trip comes to a close.