2016 ELECTION/ROBERT MUELLER/RUSSIA/TRUMP BUSINESS/UAE: “The special counsel, Robert S. Mueller III, has subpoenaed the Trump Organization in recent weeks to turn over documents, including some related to Russia, according to two people briefed on the matter. The order is the first known instance of the special counsel demanding records directly related to President Trump’s businesses, bringing the investigation closer to the president.
The breadth of the subpoena was not clear, nor was it clear why Mr. Mueller issued it instead of simply asking for the documents from the company, an umbrella organization that encompasses Mr. Trump’s business ventures. Mr. Mueller ordered the Trump Organization to hand over records related to Russia and other topics he is investigating, the people said.”

-Michael S. Schmidt and Maggie Haberman, “Mueller Subpoenas Trump Organization, Demanding Documents About Russia,” The New York Times online, Mar. 15, 2018