PUBLIC LAWS--H. 244-APR . 30 , 1946 53 Stat. 403. 26 U. S. 0. §§3340- 3361; Supp. V, § 3341 et seq. Ante, p. 157. 48 Stat. 943. 19 U. . C.. 1351; Supp. V, § 1351. Ante, pp . 154,151 . Ante, p. 151 . Ante, p. 143. Ante, p. 148. 46 Stat. 685. 19 U. S. C. 1301. 48U.S.C.§1236; Supp. V, § 1236 note. 48 U. 8. C., Supp. V, § 1243. Ante, p. 144. 48U. .C.6734. (c) Subchapter B of Chapter 28 of the Internal Revenue Code is amended as follows: (1) By amending the heading of such subchapter to read as follows: "SUBCHAPTER B-PROVISIONS OF SPECIAL APPLICA- TION TO THE VIRGIN ISLANDS AND PUERTO RICO (2) By striking out the heading: "PartI-Philippine Islands" (3) By renumbering Parts II and III of such subchapter as "Part I" and "Part II", respectively. SEC. 508. TRADE AGREEMENTS WITH THE PHILIPPINES. Until July 4, 1974, no trade agreement shall be made with the Philippines under section 350, as amended, of the Tariff Act of 1930, unless, prior to such time, the President of the United States has made the proclamation provided for in section 407 of this Act, or the executive agreement provided for in Title IV of this Act has been terminated. SEC. 509. RIGHTS OF THIRD COUNTRIES. The benefits granted by this Act, and by the executive agreement provided for in Title IV, to the Philippines, Philippine articles or products, and Philippine citizens, shall not, by reason of any pro- vision of any existing treaty or agreement with any third country, be extended to such country or its products, citizens, or subjects. SEC. 510. ADMINISTRATION OF TITLE IL (a) The provisions of Parts 1, 2, and 3 of Title II shall be admin- istered as parts of the customs and internal revenue laws of the United States. (b) The provisions of Part 4 of Title II shall be administered as a part of the immigration laws of the United States. SEC. 511. REPEALS. The following parts of Acts are repealed, effective on the day fol- lowing the date of the enactment of this Act: (1) section 301 of the Tariff Act of 1930; (2 section 6 (except subsection (g)) of the Act of March 24, 1934 (48 Stat. 456, ch. 84), as amended by the Act of August 7, 1939 (53 Stat. 1226, ch. 502); and (3) so much of section 13 of such Act of March 24, 1934, as amended by the joint resolution of June 29, 1944 (58 Stat. 626, ch. 323), as reads as follows: "After the Philippine Islands have become a free and independent nation there shall be levied, col- lected, and paid upon all articles coming into the United States from the Philippine Islands the rates of duty which are required to be levied, collected, and paid upon like articles imported from other foreign countries:". SEC. 512. EFFECTIVE DATE. This Act shall take effect on the day after the date of its enactment, except Part 2 of Title II, which shall take effect as of January 1, 1946. SEC. 513. APPLICATION OF INTERNAL REVENUE LAWS TO PUERTO RICO. Section 9 of the Act of March 2, 1917 (39 Stat. 951, ch. 145) is amended to read as follows: "SEC. 9 . That the statutory laws of the United States not locally inapplicable except as hereinbefore or hereinafter otherwise provided shall have the same force and effect in Puerto Rico as in the United [60 STAT.