Vice President Joe Biden is paying a visit to Ukraine's acting president in a high-level show of U.S. support for the embattled government. U.S. Vice President Joe Biden, left is greeted by Ukraine's Foreign Minister Andrii Deshchytsia at Borispol airport outside Kiev, Ukraine, Monday April 21, 2014. U.S. Vice President Joe Biden will meet with Ukraine's acting president, Oleksander Turchinov, and Prime Minister Arseny Yatseniuk on Tuesday, during a visit to Kiev. U.S.