In Southeast Asia, the United States government used the domino theory to justify its support of a non-communist regime in South Vietnam against the communist government of North Vietnam, and ultimately its increasing involvement in the long-running Vietnam War (1954-75).
The number of voting representatives in the House is fixed by law at no more than 435, proportionally representing the population of the 50 states.
There are 435 members of the House of Representatives. Federal law determines how many members are in the House of Representatives. The law was passed on Aug. 8, 1911. That measure raised the number of representatives to 435 from 391 because of population growth in the United States. The first House of Representatives in 1789 had only 65 members.