READ: House letter to acting DHS secretary on departures

Washington (CNN)Democratic Reps. Elijah Cummings of Maryland, Jerry Nadler of New York and Bennie Thompson of Mississippi, the heads of the Oversight, Judiciary and Homeland Security committees, respectively, wrote acting Homeland Security Secretary Kevin McAleenan on Thursday requesting all communications related to the departures of Secretary Kirstjen Nielsen, her deputy Claire Grady, Secret Service Director Randolph "Tex" Alles, acting Immigration and Customs Enforcement chief Ronald Vitiello and the possibility of others leaving.

Read the letter below.