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circa 1989: Forty-First president of the United States George Bush (1989 - 1993). (Photo by Hulton Archive/Getty Images)

circa 1989:  Forty-First president of the United States George Bush (1989 - 1993).  (Photo by Hulton Archive/Getty Images)

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WASHINGTON, DC: (NO U.S. TABLOID SALES) Vice President George H.W. Bush. (Photo by David Hume Kennerly/ Getty Images)

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STRATFORD, CT - NOVEMBER 1: US President George Bush speaks 01 November 1992 to a large group of supporters during a campaign stop at the Sikorsky Memorial Airport in Connecticut. Bush's next stop is in Madison, New Jersey 02 November. (Photo credit should read J. DAVID AKE/AFP via Getty Images)

STRATFORD, CT - NOVEMBER 1:  US President George Bush speaks 01 November 1992 to a large group of supporters during a campaign stop at the Sikorsky Memorial Airport in Connecticut.  Bush's next stop is in Madison, New Jersey 02 November.  (Photo credit should read J. DAVID AKE/AFP via Getty Images)

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HOUSTON, TX - FEBRUARY 05: President George H.W. Bush arrives for the coin toss prior to Super Bowl 51 between the Atlanta Falcons and the New England Patriots at NRG Stadium on February 5, 2017 in Houston, Texas. (Photo by Patrick Smith/Getty Images)

HOUSTON, TX - FEBRUARY 05: President George H.W. Bush arrives for the coin toss prior to Super Bowl 51 between the Atlanta Falcons and the New England Patriots at NRG Stadium on February 5, 2017 in Houston, Texas.  (Photo by Patrick Smith/Getty Images)