The Graham law now offers Donald Trump a new economic arsenal against Russia and other countries that finance its energy sector. Enacted on September 18, this legal standard authorizes tariffs that can reach 100% against the main buyers of Russian oil and gas. Following its adoption by both chambers of Congress, Donald Trump signed the “Lindsey O. Graham Sanctioning Russia and Iran Act of 2026”, while the latter is considering taking control of Iranian oil. One month after a favorable Senate vote by 86-11, the House of Representatives approved the text by 262 votes to 159 on September 16.