The Department of the Treasury's Office of Foreign Assets Control (OFAC) is adopting a final rule amending the Iranian Transactions and Sanctions Regulations (ITSR) to reflect OFAC's licensing policies and address inquiries from the regulated public. This final rule makes changes relating to authorized sales of agricultural commodities, medicine, and medical devices to Iran pursuant to the Trade Sanctions Reform and Export Enhancement Act of 2000 (TSRA), as amended, and clarifies the definition of the terms goods of Iranian origin and Iranian-origin goods.