The purpose of this legislation, known as the "Finish the Wall Act," is to resume and expedite the construction of a border wall system along the United States-Mexico border. The main objectives are to enhance border security, enforce immigration laws, and ensure that previously allocated funds for the wall's construction are utilized effectively. Key provisions of the Act include a requirement for the Secretary of Homeland Security to restart construction activities related to the border wall within 24 hours of the law's enactment.