The U.S. Department of Treasury's Office of Foreign Assets Control (OFAC) has added several individuals and entities to its Specially Designated Nationals and Blocked Persons List. These additions are based on evidence that they have engaged in, or are responsible for, serious human rights abuses. As a result, any property or financial assets they own within the U.S. jurisdiction are frozen, and U.S. citizens and companies are generally prohibited from dealing with them. OFAC's list can be accessed on their website for more details.
Simple Explanation
The U.S. Treasury Department has made a list of people and companies they don’t want others in America to do business with because they did really bad things related to human rights. This means these people can't use any money or things they have in the U.S. anymore.