The purpose of this legislation is to prevent the U.S. government from using federal funds for military action against Iran without explicit approval from Congress. It aims to reinforce the principle that only Congress has the authority to declare war or authorize military force, ensuring that any military engagement with Iran is carefully considered and debated. The key provisions of this legislation include a clear prohibition on the use of federal funds for military operations in or against Iran from the time the law is enacted until the end of 2026.