A federal appeals court will hear arguments on Tuesday on President Donald Trump's authority to deploy the National Guard and Marines to Los Angeles amid protests and civil unrest, days after a lower court ruled that the president unlawfully called the National Guard into service.

After a day of peaceful protests in Los Angeles, tensions mounted between protesters and Marines outside the federal building in downtown LA.

California's leaders and 22 Democratic governors decry Trump's show of force as a breach of the state's sovereignty and a provocative escalation.

Nearly 3,000 miles away in Los Angeles, police shot stun grenades and rubber bullets, and used tear gas, on a group of demonstrators protesting the Trump administration’s attacks on immigrant communi...