The main purpose of this legislation, known as the "Ban Birth Tourism Act," is to change the rules regarding who can enter the United States for the purpose of giving birth. Specifically, it aims to prevent certain foreign nationals from coming to the U.S. primarily to have a child, with the intention of that child automatically gaining U.S. citizenship. Key provisions of the law state that any foreign national who seeks to enter the U.S. as a nonimmigrant for the main reason of giving birth to a child in order to secure U.S. citizenship for that child will be considered inadmissible.