There are hereby authorized to be appropriated such sums of money as may be necessary to enable the Commission to discharge its duties. It shall be the duty of the Commission to formulate and issue regulations. necessary under the provisions of this act. and in compliance therewith. for the admission into the United States of eligible displaced persons and eligible displaced orphans. The Commission shall formulate and issue regulations for the purpose of obtaining the most general distribution and settlement of persons admitted under this act throughout the United States and its Territories and possessions. and not less than 50 percent of the visas issued pursuant to this act shall be available exclusively to eligible displaced persons who have been previously engaged in agricultural pursuits and who will be employed in the United States in agricultural pursuits: Provided. however. That the wife. and unmarried dependent child or children under 21 years of age. of each of such persons may. in accordance with the regulations of the Commission. be deemed to be of that class of persons who have been previously engaged in agricul�tural pursuits and who will be employed in the United States in agricultural pursuits. It shall also be the duty of the Commission to report on February 1. 1949. and each year thereafter to the President and to the Congress on the situation regarding eligible displaced persons. eligible displaced orphans and displaced persons.