California wants its own strict air pollution standards. Trump has other ideas.

The latest move from the Trump administration threatens to set in motion a massive legal battle and plunge automakers into uncertainty. The Post’s Juliet Eilperin explains how much power a president has over national environmental policy.

Om Podcasten

The Washington Post’s Libby Casey, Rhonda Colvin and James Hohmann gather for a weekly in-depth conversation about politics and power. From presidential candidates to members of Congress to the judicial system, Sidebar dives deep on the topics and people at the forefront of the political conversation. The crew sits down each Thursday (with the occasional breaking news episode) to discuss what has happened that week, and what’s coming up the next week – with guest appearances from Washington Post reporters.