President Donald Trump explores using D.C. National Guard authority to combat crime in Washington, despite data showing crime at lowest point in nearly 30 years.

Gov. Gavin Newsom alleges the Trump administration broke a 19th Century law when it sent troops to L.A. with military security perimeters and alleged apprehensions of civilian protestors.

A federal judge in San Francisco will consider evidence and hear arguments on whether the Trump administration violated ...

If the case ends in Trump’s favor, it would set a precedent, making it easier for a president to put federal troops on the streets of an American city.