The "Finish the Wall Act" mandates the resumption of border wall construction along the U.S.-Mexico border, as planned before January 20, 2021, and requires the Secretary of Homeland Security to use all available funds to complete the wall by September 30, 2026. It also requires the Department of Homeland Security to comply with the DNA Fingerprint Act of 2005 and submit implementation plans to Congress for tactical infrastructure and technology elements of the border wall system.