An escalating clash pits a Republican president looking to fulfill his mass deportation goals against a Democratic governor with White House aspirations hoping to mobilize opposition.

How did Trump send in National Guard Troops and Marines to L.A.? An explainer of presidential authority and the limits of military law enforcement.

Tens of thousands of Americans have marched through the United States' major cities in a massive protest effort against Donald Trump, coordinated to counter his show-of-force military parade in Washington DC.