Rinat Akhmetshin, a Russian immigrant who met last summer with senior Trump campaign officials, has often struck colleagues as a classic Washington mercenary — loyal to his wife, his daughter and his bank account. He avoided work that would antagonize Moscow, they suggested, only because he profited from his reputation as a man with valuable connections there.
But interviews with his associates and documents reviewed by The New York Times indicate that Mr. Akhmetshin, who is under scrutiny by the special counsel Robert S. Mueller III, has much deeper ties to the Russian government and Kremlin-backed oligarchs than previously known.