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.
The U.S. House of Representatives and the U.S. Senate make up the two chambers of Congress. The House has 435 members, the number representing each state is determined by population. 1  U.S. House of Representatives.  House Committees.