Congressional Democrats are demanding a tour of an Immigration and Customs Enforcement facility in Baltimore as part of the party’s push to conduct oversight over the Trump administration’s immigration policies.

The Maryland delegation, including Sens. Chris Van Hollen (D-MD) and Angela Alsobrooks (D-MD), as well as Reps. Glenn Ivey (D-MD), Johnny Olzewski Jr. (D-MD), Sarah Elfreth (D-MD), and Kweisi Mfume (D-MD) were denied a tour of the George H. Fallon federal building on Monday.