To amend the federal Constitution, we need the assent of two-thirds of each house of Congress and three-fourths of the states. This Article focuses on the three-fourths requirement for the states. This threshold is particularly high, and it suggests that constitutional amendment is very difficult. In fact, amendment is difficult in different degrees for different constituencies, depending not on their numbers but on where they live.
Population Changes and Constitutional Amendments: Federalism versus Democracy,
U. Mich. J. L. Reform
Available at: https://repository.law.umich.edu/mjlr/vol20/iss2/3