The main purpose of this legislation, known as the "No Sanctions Relief for Terrorists Act," is to strengthen sanctions against individuals and entities in Iran that are involved in terrorism. The goal is to prevent any licenses or waivers that would allow these sanctioned parties to engage in transactions that would otherwise be prohibited under U.S. law. Key provisions of this law include a strict prohibition on granting licenses or waivers for transactions with Iranian individuals or entities that are on a specific list maintained by the U.S. Treasury Department.