The main purpose of this legislation, known as the "Save Our Seafood Act," is to permanently allow foreign workers, specifically those working as fish processors, to be exempt from the numerical limits on H-2B nonimmigrant visas. This aims to ensure that the seafood processing industry can access the labor it needs without being restricted by visa quotas. Key provisions of the act include a change to existing immigration law that removes the cap on the number of H-2B visas available for nonimmigrant aliens employed in specific roles related to fish processing.