Photo: President Obama Calls Justice Stevens

President Barack Obama talks on the phone with Associate Justice John Paul Stevens, in the Oval Office, after announcing that he would be retiring from the Supreme Court, April 9, 2010. (Official White House Photo by Pete Souza)

President Obama spoke with Supreme Court Justice Stevens Friday after the justice sent a letter announcing his intent to retire.Obama praised Stevens and thanked him for his service on behalf of a "grateful nation."

Vice President Biden also spoke to Justice Stevens, saluting him for his time on the high court.