In April 2018, the Trump Administration began a “Zero Tolerance” policy that led to the Department of Homeland Security (DHS) separating asylum-seeking parents from their children.[1] This policy affected both families who presented themselves at a port of entry and those who entered unlawfully between ports of entry. Much confusion ensued as advocates tried to understand how DHS was separating families and how to respond to this new crisis. This fact sheet explains how the Trump Administration carried out family separation and the recent federal court ruling in Ms. L v. ICE.