The person in the White House most knowledgeable about Supreme Court nominations sits in the vice president's office.
With President Obama filling his first high court vacancy with the retirement of Justice David H. Souter, Vice President Biden finds himself regularly consulting with the president and fielding queries from the White House counsel and others for insights on the process.
"The president is basically taking advantage of my experiences by asking me nuanced questions about both individuals and timing," Biden said in an interview Friday. "We've gone through specific nominees, which we're burrowing in on."
http://www.washingtonpost.com/wp-dyn/content/article/2009/05/10/AR2009051002129.html?hpid=moreheadlines