President Bill Clinton gestures as he is introduced at the Democratic National Convention in the Staples Center in August 2000 in Los Angeles. Not every member of the Democratic Party remains enthralled with the contentious and sometimes chaotic Clinton years. (Associated Press)
“There is a huge gap between Bill Clinton’s effort to take the Democratic Party to the center and Barack Obama’s effort to take it to the left. So I think, in a funny kind of way, having President Clinton at the Democratic convention may highlight the difference between the two choices,” said former House Speaker Newt Gingrich. (Raymond Thompson/The Washington Times)
Former U.S. President Bill Clinton (right) meets with former South African President Nelson Mandela at the latter's home in Qunu, South Africa, on Tuesday, July 17, 2012, on the eve of Mr. Mandela's 94th birthday. (AP Photo/Peter Morey)
In this July 6, 2012, photograph, following the unveiling of GreenTech Automotive's new electric MyCar, former President Bill Clinton speaks to attendees at their manufacturing facility in Horn Lake, Miss. (AP Photo/Rogelio V. Solis)
Former President Bill Clinton speaks at a Democratic fundraiser in New York. He later told CNBC he favors keeping tax cuts for all income levels. (Associated Press)
Former President Bill Clinton claps as President Obama arrives to speak at a campaign event at the New Amsterdam Theatre in New York on June 4, 2012. (Associated Press)
** FILE ** Former President Bill Clinton and President Obama wave to the crowd during a campaign event at the Waldorf Astoria on Monday, June 4, 2012, in New York. (AP Photo/Carolyn Kaster)