In view of the changing conditions in American Samoa, the Governor shall appoint a new Constitutional Committee five years after the effective date of this Constitution to prepare amendments or a revised draft constitution to be submitted to the Governor who shall call a constitutional convention to consider the same. The delegates to the convention shall be selected by their respective county councils. The number of delegates from each county shall be the number obtained by dividing the population of the county, as shown by the last preceding Federal census, by 400, any fraction in the quotient obtained to be disregarded if such fraction shall be less than one-half and if such fraction shall be one-half or more it shall be considered to be one unit, provided that each county shall have at least one delegate, and provided further that Swains Island shall have one delegate selected in open meeting by the adult permanent residents of the island who are United States nationals. If the convention approves such amendments or draft constitution either with changes made therein by the convention or without changes, the same as approved shall be submitted by the Governor to the voters eligible to vote for members of the House of Representatives at the next general election; and if a majority of the voters voting approve the amendments or proposed revised constitution, the Governor shall submit the same to the Secretary of the Interior for his approval, and if he approves the same, then the amendments shall become part of the Constitution or the proposed revised constitution shall replace this constitution, as the case may be. Salaries of employees of the Convention and per diem for delegates shall be provided by law. The Government shall furnish the Convention with necessary supplies and other necessary services.