Sitting on the U.S. Supreme Court are (clockwise from upper left) Associate Justices Sonia Sotomayor, Stephen G. Breyer, Samuel A. Alito Jr., Elena Kagan, Ruth Bader Ginsburg and Anthony M. Kennedy; Chief Justice John G. Roberts Jr.; and Associate Justices Antonin Scalia and Clarence Thomas. (AP Photo/Pablo Martinez Monsivais)
This artist rendering shows attorney Charles J. Cooper, right, addressing the Supreme Court in Washington, Tuesday, March 26, 2013, as the court heard arguments on California's ban on same-sex marriage. Justices, from left are, Sonia Sotomayor, Stephen Breyer, Clarence Thomas, Antonin Scalia, Chief Justice John Roberts, and Justices Anthony Kennedy, Ruth Bader Ginsburg, Samuel Alito and Elena Kagan. (AP Photo/Dana Verkouteren)
This artist rendering shows attorney Charles J. Cooper, right, addressing the Supreme Court in Washington, Tuesday, March 26, 2013, as the court heard arguments on California's ban on same-sex marriage. Justices, from left are, Sonia Sotomayor, Stephen Breyer, Clarence Thomas, Antonin Scalia, Chief Justice John Roberts, and Justices Anthony Kennedy, Ruth Bader Ginsburg, Samuel Alito and Elena Kagan. (AP Photo/Dana Verkouteren)
Sitting on the U.S. Supreme Court are (clockwise from upper left) Associate Justices Sonia Sotomayor, Stephen G. Breyer, Samuel A. Alito Jr., Elena Kagan, Ruth Bader Ginsburg and Anthony M. Kennedy; Chief Justice John G. Roberts Jr.; and Associate Justices Antonin Scalia and Clarence Thomas. (AP Photo/Pablo Martinez Monsivais)
Sitting on the U.S. Supreme Court are (clockwise from upper left) Associate Justices Sonia Sotomayor, Stephen G. Breyer, Samuel A. Alito Jr., Elena Kagan, Ruth Bader Ginsburg and Anthony M. Kennedy; Chief Justice John G. Roberts Jr.; and Associate Justices Antonin Scalia and Clarence Thomas. (AP Photo/Pablo Martinez Monsivais)
Supreme Court Justices, from left, Chief Justice John Roberts, Anthony Kennedy, Ruth Bader Ginsburg, Stephen Breyer, Sonia Sotomayor and Elena Kagan await the start of President Barack Obama's State of the Union address during a joint session of Congress on Capitol Hill in Washington, Tuesday Feb. 12, 2013. (AP Photo/Charles Dharapak, Pool)
Outgoing Defense Secretary Leon Panetta, left, shakes hands with Chief Justice John Roberts before President Barack Obama's State of the Union address during a joint session of Congress on Capitol Hill in Washington, Tuesday Feb. 12, 2013. (AP Photo/Charles Dharapak Pool)
Supreme Court Chief Justice John Roberts arrives during the presidential inauguration on the West Front of the U.S. Capitol January 21, 2013 in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. (Photo by POOL Win McNamee/Getty Images)
President Barack Obama takes the oath of office from Chief Justice John Roberts at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Scott Andrews, Pool)
