A panel rejected a lower court’s finding that it was most likely illegal for President Trump to use state troops to protect immigration agents from protests.

A federal appeals court on Tuesday spent more than an hour grappling with whether President Donald Trump unlawfully federalized thousands of members of California’s National Guard to beef up security in Los Angeles amid unrest over immigration enforcement.

The legal battle over President Donald Trump’s decision to dispatch armed troops to Los Angeles continued Monday, with California asking a federal court to consider how long National Guard members can stay on the ground and whether the deployment violates a 147-year-old law that bars using the military against civilians.