This bill requires the Department of Homeland Security (DHS) to establish a standardized system within 180 days to track, record, and report all instances where United States citizens or lawful permanent residents (LPRs) are detained for at least 24 hours or removed for immigration enforcement purposes. This system must report quarterly to specific congressional committees, including those on Homeland Security, Judiciary, and Oversight. It also covers situations where these individuals were initially apprehended by other federal, state, or local agencies and subsequently transferred to DHS custody for detention or removal. The system is specifically designed to include information on minors under 18 who were removed alongside a parent or guardian without lawful immigration status. Furthermore, the bill mandates that DHS, in collaboration with the Department of State, establish a clear process within 180 days for individuals to submit proof of their U.S. citizenship or lawful permanent resident status if they are detained, removed, or apprehended. The term "removed" is defined as being repatriated or transported from the United States to another country.