WASHINGTON (AP) — The District of Columbia has requested National Guard assistance to help stem a “growing humanitarian crisis” prompted by thousands of migrants that have been sent to Washington by a pair of southern states. The crisis began in spring when Texas Gov. Greg Abbott and Arizona Gov. Doug Ducey announced plans to send busloads of migrants to Washington, D.C., in response to President Joe Biden’s decision to lift a pandemic-era emergency health order that restricted migrant entry numbers. Since then the city estimates that nearly 200 buses have arrived, delivering more than 4,000 migrants to Union Station, often with no resources and no clue what to do next.