President Barack Obama shakes hands with an unidentified man in a wheelchair after signing an Executive Order on stem cells and a Presidential Memorandum on scientific integrity, Monday, March 9, 2009, in the East Room of the White House in Washington. AP Photo logo AP Photo 9 months ago

President Barack Obama shakes hands with an unidentified man in a wheelchair after signing an Executive Order on stem cells and a Presidential Memorandum on scientific integrity, Monday, March 9, 2009, in the East Room of the White House in Washington.