President Obama isn't the only White House official who has been meeting with potential Supreme Court nominees.  Vice President Joe Biden, a former chairman of the Senate Judiciary Committee, has also conducted his own interviews with all four candidates.  

Sources close to the situation confirm to Fox News' Major Garrett that Vice President Biden has participated in separate interviews with potential nominees Elena Kagan (current Solicitor General), Merrick Garland (DC Circuit Court of Appeals judge), Sidney Thomas (9th Circuit Court judge), and Diane Wood (7th Circuit Court judge).

Judge Wood's interviews with the President and Vice President occurred Tuesday.