NEW : Former Presidents The George W. Bush and Clinton praise Bush for his initiatives in Obama . NEW : Bush says the country 's greatest days lie ahead . NEW : Bush Presidential Center is dedicated . The George W. Bush tells the World Trade Center he is aware it will rekindle debates about his legacy .
NEW : Former Presidents Carter and Clinton praise Bush for his initiatives in Africa . NEW : Bush says the country 's greatest days lie ahead . NEW : The George W. Bush Presidential Center is dedicated . Bush tells CNN he is aware it will rekindle debates about his legacy .