President Trump's promises to build a wall, deport undocumented immigrants and withhold federal funding from sanctuary cities is raising the alarm in the Golden State. California's population includes about 10 million immigrants and a state legislature ready to do battle. Why Trump's promises could face legal challenges.
The Trump threat
- Erwin Chemerinsky - constitutional law professor and dean of UC Berkeley School of Law
- Jim McDonnell - Los Angeles County Sheriff - @LACoSheriff