The U.S. Dollar strengthened on Wednesday rising against the Japanese Yen as President Barack Obama picked Janet Yellen as a replacement of Ben Bernanke as the Federal Reserve Vice Chairwoman, however, the persisting deadlock kept the so-called Greenback close its 8-month low. The U.S. Dollar advanced 0.4% to 97.22 Yen after it recorded the lowest level in 2 months yesterday at 96.55.