Increased the size of the House of Representatives to 356 seats. These seats were apportioned among the states using the Webster and Hamilton/Vinton Methods, which agree at this chamber size.

Increased the size of the House of Representatives to 386 seats.

Sets the size of the House of Representatives at 433 seats, with an additional one seat each allowed for the soon-to-be-states of Arizona and New Mexico, when they were admitted into the Union.

After Congress, dominated by rural politicians who stood to lose clout in a quickly urbanizing nation, failed to reapportion its seats following the 1920 census, this law set the process in place so that apportionment would occur automatically following the 1930 enumeration. The size of the House remained at 435 seats.

Made reapportionment of the House of Representatives automatic, using the same method as the previous apportionment, unless Congress intervenes.

Provided for the automatic reapportionment of the House of Representative's 435 seats following each census, using the Huntington-Hill/Equal Proportions Method.