No ex post facto law or bill of attainder shall be enacted. The contracting of polygamous or plural marriages is prohibited. No political or religious test other than an oath to support the Constitution and the laws of the United States applicable to the Virgin Islands and the laws of the Virgin Islands shall be required as a qualification to any office of trust or profit under the Government of the Virgin Islands. Provided, however, that no person who advocates, or who knowingly aids or belongs to any party, organization or association which advocates the overthrow by force or violence of the government of the Virgin Islands or of the United States shall be qualified to hold any office of trust or profit under the government of the Virgin Islands. The rights, privileges, and immunities of citizens of the United States shall be respected in the Virgin Islands to the same extent as though the Virgin Islands were a State of the Union and subject to the provisions of paragraph 1 of Section 2 of Article IV of the Constitution of the United States. The foregoing enumeration of rights shall not be construed restrictively. Nothing contained in this Act shall be construed to limit the power of the legislature herein provided to enact laws for the protection of life, the public health, social welfare, or the public safety. No money shall be paid out of the Virgin Islands treasury except in accordance with an Act of Congress or money bill of the legislature and on warrant drawn by the proper officer. No law authorizing or permitting the conducting or operation of public or private gambling, beyond such forms or types authorized or permitted under the law existing on the date of enactment of this Act, shall be effective in the Virgin Islands until and unless approved by a two thirds majority vote of the electorate of the Virgin Islands. FRANCHISE 4. VOTING FRANCHISE; DISCRIMINATION PROHIBITED. The franchise shall be vested in residents of the Virgin Islands who are citizens of the United States, eighteen years of age or over. Additional qualifications may be prescribed by the legislature. Provided, however, that no property, language, or income qualification shall ever be imposed upon or required of any voter, nor shall any discrimination in qualification be made or based upon differences in race, color, sex, or upon political or religious belief.