Former U.S. President Bush and first lady arrive for unveiling of Bush's official portraits at the White House in Washington

Former U.S. President George W. Bush (L) walks next to U.S. President Barack Obama (2nd L) while former first lady Laura Bush (2nd R) walks next to first lady Michelle Obama before the unveiling of the Bushs' official White House portraits in the East Room of the White House in Washington May 31, 2012. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS)