** FILE ** President Barack Obama is applauded by members of Congress, and others, 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/Ron Edmonds)
**FILE** Former President Bill Clinton (left) listens to former President George W. Bush speak on Saturday, Jan. 16, 2010, in the Rose Garden of the White House in Washington. (AP Photo/Ron Edmonds)
**FILE** Former President Bill Clinton (left) listens to former President George W. Bush speak on Saturday, Jan. 16, 2010, in the Rose Garden of the White House in Washington. (AP Photo/Ron Edmonds)
** FILE ** National Rifle Association Executive Vice President Wayne LaPierre is interviewed by The Associated Press in Washington on Wednesday, Sept. 8, 2004. (AP Photo/Ron Edmonds)
President George H W Bush is joined by family members as he concedes to Bill Clinton on Nov. 3, 1992 at Houston hotel in Houston. (AP Photo/Ron Edmonds)
Pres. George H. W. Bush makes a point during first presidential prime time televised news conference in the East Room of the White House, Thursday, June 9, 1989, Washington, D.C. Bush told reporters that the United States cannot return to totally normal relations with china unless that government recognizes the validity of democracy forces. (AP Photo/Ron Edmonds)
Pres. George H. W. Bush, left, speaks to the orbiting Columbia astronauts with Vice Pres. Dan Quayle from the Oval Office, Thursday, Jan. 18, 1989, Washington, D.C. (AP Photo/Ron Edmonds)
National Rifle Associaiton Executive Vice President Wayne LaPierre is interviewed by the Associated Press in Washington on Wednesday, Sept. 8, 2004. Mr. LaPierre discussed the gun lobby's plans for the fall election, upcoming repeal of the assault weapons ban, and other political issues. (AP Photo/Ron Edmonds)
** FILE ** National Rifle Association Executive Vice President Wayne LaPierre is interviewed by The Associated Press in Washington on Wednesday, Sept. 8, 2004. (AP Photo/Ron Edmonds)
