The main purpose of this legislative proposal is to amend the U.S. Constitution regarding how members of the House of Representatives are allocated among the states. Specifically, it aims to ensure that the distribution of representatives is based solely on the number of U.S. citizens in each state, rather than the total population, which includes non-citizens. The key provision of this proposal is the requirement that when determining how many representatives each state gets, only the count of U.S. citizens will be considered.