The Department of the Treasury's Office of Foreign Assets Control (OFAC) has updated its Specially Designated Nationals and Blocked Persons List. This update includes individuals and entities that have met specific legal criteria under Executive Order 13818, related to human rights abuses or corruption. As a result, any property and interests in property they have within U.S. jurisdiction are frozen, and U.S. persons are generally not allowed to engage in financial transactions with them. The details of the designated individuals and entities, including reasons for their designation, are available on the OFAC website.
Simple Explanation
The U.S. government made a list of people and groups from other countries who did bad things like hurting others or stealing money, and they're telling everyone in the U.S. not to do business with them. Any of their stuff that is in the U.S. gets taken away to stop them from continuing those bad actions.