The main purpose of this legislation is to change the rules regarding the admission of certain religious leaders into the United States. Specifically, it aims to prevent individuals with specific titles from entering the country under a particular visa category that is typically used for religious workers. The key provision of this legislation is the amendment to the Immigration and Nationality Act, which states that individuals holding titles such as Imam, Shaykha, Mufti, or Ayatollah cannot be admitted to the U.S. under the R visa category.