The U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) has issued a notice that one or more individuals have been added to the Specially Designated Nationals and Blocked Persons List. This means that all property and interests in property in the U.S. of these individuals are blocked, and U.S. citizens are generally not allowed to do business with them. The decision was made based on the fulfillment of certain legal criteria. Additional details and the list can be found on OFAC’s website.
Simple Explanation
The U.S. Treasury Department has made a list of people that Americans cannot do business with because they did something wrong. They didn't say who these people are or why they're on the list, so it might be hard to understand all the details.