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.
Members in the House are called representatives. Each state receives representation in the House in proportion to the size of its population but is entitled to at least one representative. There are currently 435 representatives, a number fixed by law since 1911.