First lady Michelle Obama, President Barack Obama, former first lady Barbara Bush, former President George H.W. Bush and former President George W. Bush attend the opening ceremony of the George W. Bush Presidential Center on Thursday, April 25, 2013 in Dallas. Republicans and Democrats alike and world leaders were in attendance during the official dedication of the facility. Kevork Djansezian/Getty Images
Former President George W. Bush holds back tears as he finishes his speech. BRENDAN SMIALOWSKI/AFP/Getty Images
Former president George W. Bush, center, speaks to the crowd at the opening ceremony of the George W. Bush Presidential Center, flanked, left to right, by first lady Michelle Obama, President Barack Obama, former first lady Barbara Bush, former President George H.W. Bush, former first lady Laura Bush, former President Bill Clinton, former first lady Hillary Clinton, former President Jimmy Carter and former first lady Rosalynn Carter. Kevork Djansezian/Getty Images
George W. Bush gestures a "W" to the crowd after speaking. Kevork Djansezian/Getty Images
George W. Bush hugs his wife Laura after speaking. JEWEL SAMAD/AFP/Getty Images
Left to right: Former President Bill Clinton, former first lady Hillary Clinton, former President Jimmy Carter and former first lady Rosalynn Carter listen during the opening ceremony. Alex Wong/Getty Images
Former President George W. Bush and former first lady Laura Bush laugh during former President Bill Clinton's speech. Kevork Djansezian/Getty Images
President Obama speaks with former first lady Barbara Bush during the ceremony. JEWEL SAMAD/AFP/Getty Images
Former Italian Prime Minister Silvio Berlusconi, center, attends the ceremony. JEWEL SAMAD/AFP/Getty Images
President Barack Obama speaks during the opening ceremony. Kevork Djansezian/Getty Images
Former UK Prime Minister Tony Blair attends the ceremony. Alex Wong/Getty Images
Left to right: former Secretary of State Condoleezza Rice, former Vice President Dick Cheney, Jenna Bush Hager, her husband Henry Hager, Barbara Bush, Miky Febrega, and former Florida Gov. Jeb Bush sing the national anthem at the ceremony. JEWEL SAMAD/AFP/Getty Images
President Barack Obama and former presidents George W. Bush, Bill Clinton, George H.W. Bush and Jimmy Carter arrive on stage for the George W. Bush Presidential Center dedication ceremony. Alex Wong/Getty Images
George W. Bush's daughter Jenna Bush Hager, her husband Henry Hager, sister Barbara Bush, her boyfriend Miky Fabrega, former governor of Florida Jeb Bush, and his wife Columba Bush attend the opening ceremony. Alex Wong/Getty Images
Boots commemorate George W. Bush's tenure as general managing partner of the Texas Rangers. Kevork Djansezian/Getty Images
Tanzanian President Jakaya Kikwete presented this lion, here presented at the library, to George W. Bush during his trip to Africa in 2008. Kevork Djansezian/Getty Images
A pistol captured with Saddam Hussein on December, 13, 2003, is displayed at the Center. Kevork Djansezian/Getty Images
This display relates to the Bush administration's faith-based and community initiative. Kevork Djansezian/Getty Images
A security guard stands in front of the George W. Bush Presidential Library and Museum, part of the George W. Bush Presidential Center on the Southern Methodist University campus in Dallas, on Tuesday, April 16. Ron T. Ennis/Fort Worth Star-Telegram/MCT/Landov
Steel beams from the World Trade Center are displayed in the September 11 portion of the George W. Bush Presidential Center on Wednesday, April 24. Kevork Djansezian/Getty Images
Patricia Flynn shows off the interactive table of conflicts in the Middle East. Kevork Djansezian/Getty Images
Former first lady Laura Bush and Alan Lowe, director of the George W. Bush Presidential Library, arrive to speak to media during a tour of the center. Kevork Djansezian/Getty Images
A photographer makes a photo of the two bronze statues of former Presidents George W. Bush and his father, George H.W. Bush, in a courtyard at the Center. Paul Moseley/Fort Worth Star-Telegram/MCT/Landov
Members of the media shoot video inside a recreated White House Oval Office during a tour of the George W. Bush Presidential Center. Kevork Djansezian/Getty Images
President George W. Bush's baseball collection is on display in the center. Kevork Djansezian/Getty Images
The entrance to the museum as seen on April 24, the day before its dedication. Ian Halperin/upi/LANDOV
President Bush's and first lady Laura Bush's jackets for Air Force One are on display. Brianna Keilar/CNN
The center features an exhibit on educational policy. Ian Halperin/upi/LANDOv