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FILE - In this March 6, 1968 file photo, George H.W. Bush, R-Texas, appears in Washington. Bush died at the age of 94 on Frid... FILE - In this Feb. 11, 1991, file photo, President George H.W. Bush talks to reporters in the Rose Garden of the White House... FILE - In this Nov. 8, 1988 file photo, President-elect George H.W. Bush and his wife Barbara wave to supporters in Houston, ... FILE - In this Oct. 9, 1970 file photo, Rep. George H.W. Bush, R-Texas, talks with a group of young people at a rally in Hous... FILE - In this Oct. 15, 1992, file photo, President George H.W. Bush, left, talks with independent candidate Ross Perot as De... FILE - In this Oct. 29, 1991, file photo, President George H.W. Bush gestures during a joint news conference with Soviet Pres... FILE - In this Jan. 7, 2009, file photo, President George W. Bush, center, poses with President-elect Barack Obama, second le... FILE - In this Nov. 3, 1980 file photo, former President Gerald Ford lends his support to Republican presidential candidate R... FILE - In this Jan. 7, 2009, file photo, former President George H.W. Bush, left, walks with his wife, Barbara Bush, followed... FILE - In this Jan. 20, 1989, file photo, President George H.W. Bush raises his right hand as he is sworn into office as the ... FILE - In this June 5, 1989 file photo, U.S. President George H.W. Bush holds a news conference at the White House in Washing... FILE - In this May 11, 2008 file photo, former President George H.W. Bush arrives on the South Lawn of White House in Washing... FILE - In this Feb. 25, 2000, file photo, former President George H.W. Bush waves as he leaves Methodist Hospital with his ca... FILE - In this Jan. 18, 2011, file photo, veteran Associated Press writer Michael Graczyk, right, asks questions to former Pr... FILE - In this May 7, 2004, file photo, former President George H.W. Bush, left, talks about skydiving during an interview wi... FILE - In this Wednesday, 15, 1991 file photo, US President George H.W. Bush escorts Queen Elizabeth II from the White House... FILE - In this September 1990 file photo, US President George Bush, left and Soviet President Mihail Gorbatshov speak in a pr... Former Republican President George H.W. Bush, left, and former President Bill Clinton, visiting Bush, pose for a photo with S... Former President George H.W. Bush, second left, poses for a photo with Sully, a yellow Labrador retriever who'll be his first... FILE - In this Dec. 20, 1989, file photo, President George H.W. Bush addresses the nation on television from the Oval Office ... This file photo provided by Office of George H. W. Bush shows a photo of former President George H.W. Bush that was tweeted o... In this photo provided by the Office of George W. Bush, former U.S. presidents George H.W. Bush and his son pose for a photo ...