The State Department has designated Sultan Yusuf Hasan al-'Arif, also known by several aliases, as a Specially Designated Global Terrorist. This action is taken under Executive Order 13224, which targets leaders of terrorist groups like al-Qa'ida. As a result, Sultan al-'Arif's property and interests within U.S. jurisdiction are blocked. The Secretary of State, Michael R. Pompeo, determined that providing prior notice to al-'Arif could undermine the effectiveness of these measures, as it might allow for the rapid transfer of funds.
Simple Explanation
The U.S. State Department decided that a person named Sultan Yusuf Hasan al-'Arif is too dangerous because he helps bad guys like al-Qa'ida. To stop him from moving his money around in the U.S., they have blocked all of his stuff here.