A day after an ICE agent fatally shot Renee Good in Minneapolis, Homeland Security Secretary Kristi Noem quietly ordered new restrictions on congressional visits to immigration detention facilities.

That order, put into effect Thursday by the Trump administration and revealed in court late Saturday, forces lawmakers to seek a week’s advance notice before conducting oversight visits to ICE facilities. That new policy appears to explain a conflict that unfolded Saturday, when three House Democrats from Minnesota were denied entry to a detention facility in the Whipple federal building in Minneapolis.