H.R. 4078 requires the Department of Homeland Security to create and maintain a publicly available online database tracking immigration detention operations. The database would include information about individual detainees (such as legal authority for detention, duration, and location), overall detention population statistics (including demographics and disciplinary actions), and details about "non-traditional" detention facilities on military bases, tribal lands, or outside the continental U.S. (including justifications, costs, and compliance efforts). The database must be updated daily with archived historical data made available annually, while protecting detainees' personal identifiable information. Additionally, the bill prohibits DHS from discontinuing or reducing operations of its Office of the Immigration Detention Ombudsman and Office for Civil Rights and Civil Liberties. The legislation does not specify separate funding amounts but notes that operations depend on available appropriations.