A federal judge has ruled that President Trump’s call-up of the California National Guard was illegal, prompting an immediate appeal from the Trump administration. The troops will remain in place for at least a few days after the 9th Circuit Court of Appeals granted an administrative stay of the judges ruling.

Marines deployed to Los Angeles carried out the detention of a civilian on Friday, the U.S. military confirmed after being presented with Reuters images, in the first known detention by active-duty tr...

California leaders warn that the military intervention is the onset of a much broader effort by Trump to overturn norms at the heart of America's political system.