Number of tiers
United States
Answer
1
Source
United States House of Representatives, official website, http://www.house.gov/content/learn/
Comment
“As per the Constitution, the U.S. House of Representatives makes andpasses federal laws. The House is one of Congress’s two chambers (the other isthe U.S. Senate), and part of the federal government’s legislative branch. Thenumber of voting representatives in the House is fixed by law at no more than435, proportionally representing the population of the 50 states.”
