John Mauceri had a complicated health history, but his sudden swelling and fatigue left his team of doctors stumped.

A 13-year-old boy who fell off a Memorial Day parade trailer in Green, Ohio, and suffered critical injuries was pronounced dead at a local hospital, the city's fire department says.

The move amounts to a sweeping reversal of "sanctuary" policies in the nation's capital, allowing the Metropolitan Police Department, for the time being, to fully cooperate with federal immigration enforcement.