; and (B) the Committee on Homeland Security, the Speaker, and the minority leader of the House of Representatives. (2) Indian tribe The term Indian Tribe has the meaning given the term Indian tribe in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 ). (3) Risk limiting audit The term risk limiting audit means an audit protocol that makes use of statistical methods and is designed to limit to acceptable levels the risk of certifying a preliminary election outcome that constitutes an incorrect outcome. (4) Secretary The term Secretary means the Secretary of Homeland Security. (5) State The term State includes the District of Columbia, the Commonwealth of Puerto Rico, Guam, American Samoa, and the United States Virgin Islands. (6) Voting system The term voting system has the meaning given that term in section 301(b) of the Help America Vote Act of 2002 ( 52 U.S.C. 21081(b) ). (g) Authorization of appropriations To carry out this section, there is authorized to be appropriated $2,500,000,000 for the period of fiscal years 2019 through 2028. Amounts appropriated under the preceding sentence shall remain available until expended.