President Obama introduces Solicitor General Elena Kagan as his choice for Supreme Court justice in the East Room of the White House in Washington on Monday, May 10, 2010. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

President Obama introduces Solicitor General Elena Kagan as his choice for Supreme Court justice in the East Room of the White House in Washington on Monday, May 10, 2010. (AP Photo/Pablo Martinez Monsivais)