The District of Columbia filed suit Thursday seeking to block President Donald Trump 's deployment of National Guard troops in the nation's capital, escalating a legal fight over federal authority in the city.

D.C. Attorney General Brian Schwalb argued in the federal lawsuit that the influx of more than 1,000 troops amounts to an "involuntary military occupation" and violates the law. The deployment coincided with Trump's Aug. 11 executive order authorizing the surge, which Schwalb contends is an unlawful use of the military for domestic law enforcement.

Why It Matters

Trump last month sent National Guard troops to Washington, D.C., to "reestablish law, order and public safety" amid concerns about crime in the nation's capital. He invoked federal authority to take over the Metropoli

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