On November 13th, sources familiar with the matter revealed that the United States is investigating the Russian clients that UBS Group acquired during its acquisition of Credit Suisse. According to informed sources, as part of the investigation, the Office of Foreign Assets Control (OFAC) in the United States has sent a letter to the bank. A US official said that UBS and the law enforcement agency have had discussions. Insiders say that UBS is trying to avoid punishment by blocking suspicious funds and revoking accounts. (Reuters)