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.

To some Angelenos, the notion that their city was being invaded by Mexico might sound like a fantastical twist on the history of U.S.-Mexico military relations.

In the second case, which is still ongoing, Trump not only deployed the California National Guard over the objections of Gov. Gavin Newsom, he also called in 700 active duty Marines to quell anti-ICE ...