More than 4,000 federal employees were laid off in March when the Education Department eliminated six of its regional offices, including Dallas.

Eleven Senate Democrats are calling for a full investigation, warning that the closure could have the most significant impact yet on the ongoing education shutdown. The Dallas office served public schools across Texas,

President Trump’s executive order directs Education Secretary Linda McMahon to dismantle the federal Department of Education, an action that’s been at least several months in the making.