The main purpose of this legislation is to provide a one-time financial grant to support the operation, security, and maintenance of the National September 11 Memorial & Museum located at the World Trade Center. This funding aims to help commemorate the events of September 11, 2001, and honor the victims of the terrorist attacks. Key provisions of the legislation include the establishment of a grant that ranges from $5 million to 0 million, which the Secretary of Homeland Security will award to the eligible organization that operates the Memorial & Museum.