National origins provision of immigration law : hearing before the Committee on Immigration, United States Senate, Seventieth Congress, first session on S.J. Res. 4, a joint resolution to amend the Immigration Act of 1924 by the repeal of the national origin provision : S.J. Res. 113, a joint resolution to amend subdivisions (b) and (e) of section 11 of the Immigration Act of 1924, as amended : S. 1481, a bill to amend sections 11 and 12 of an act to limit the immigration of aliens into the United States, and for other purposes, approved May 26, 1924 : S. 3019, a bill to amend the immigration laws, and for other purposes, March 15, 1928.