KENNEBUNKPORT, Maine -- Former Arizona Congresswoman Gabby Giffords has met with former President George H.W. Bush during her national tour to push for gun control.

Giffords and her husband, former Navy pilot and astronaut Mark Kelly, visited the former Republican president at his Kennebunkport estate on Saturday. Former first lady Barbara Bush also attended the lunch meeting.

Kelly, who previously lived in Texas, is a personal acquaintance of the Bush family.

Giffords, severely injured during a 2011 assassination attempt, has become the face of the campaign to expand background checks on gun purchases, which is opposed by the National Rifle Association.

Bush, 89, resigned from the NRA in 1995, citing its response to the Oklahoma City bombing.

Giffords and Kelly head to North Carolina on Sunday to finish their tour.

Earlier on HuffPost:

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  • Retired NASA astronaut and Navy Capt. Mark Kelly (R) and his wife, shooting victim and former U.S. Rep. Gabby Giffords (D-AZ) (C) arrive for a Jan. 30, 2013 Senate Judiciary Committee about gun control on Capitol Hill in Washington, D.C. (Photo by Chip Somodevilla/Getty Images)

  • Retired NASA astronaut and Navy Capt. Mark Kelly (R) and his wife, shooting victim and former U.S. Rep. Gabby Giffords (D-AZ) (C) arrive for a Jan. 30, 2013 Senate Judiciary Committee about gun control on Capitol Hill in Washington, D.C. (Photo by Mark Wilson/Getty Images)

  • Shooting victim and former U.S. Rep. Gabby Giffords (D-AZ) arrives for a Jan. 30, 2013 Senate Judiciary Committee hearing about gun control on Capitol Hill in Washington, D.C. (Photo by Mark Wilson/Getty Images)

  • Retired NASA astronaut and Navy Capt. Mark Kelly (R) and his wife, shooting victim and former U.S. Rep. Gabby Giffords (D-AZ) (2nd R) arrive for a Jan. 30, 2013 Senate Judiciary Committee about gun control on Capitol Hill in Washington, D.C. (Photo by Chip Somodevilla/Getty Images)

  • Retired NASA astronaut and Navy Capt. Mark Kelly (R) and his wife, shooting victim and former U.S. Rep. Gabby Giffords (D-AZ) prepares to give an opening statement before the Senate Judiciary Committee about gun control on Capitol Hill January 30, 2013 in Washington, D.C. (Photo by Mark Wilson/Getty Images)

  • Shooting victim and former U.S. Rep. Gabby Giffords (D-AZ) (L) and her husband Retired NASA astronaut and Navy Capt. Mark Kelly (2nd L) arrive for a Jan. 30, 2013 Senate Judiciary Committee hearing about gun control in Washington, D.C. (Photo by Chip Somodevilla/Getty Images)

  • Shooting victim and former U.S. Rep. Gabby Giffords (D-AZ) (C) speaks with members of the Senate Judiciary Committee before a Jan. 30, 2013 hearing about gun control on Capitol Hill in Washington, D.C. (Photo by Mark Wilson/Getty Images)

  • Shooting survivor and former congresswoman Gabrielle Giffords (D-AZ) (L) is seated next to her husband Captain Mark Kelly, USN (Ret.) during a Jan. 30, 2013 Senate Judiciary Committee hearing on gun violence in Washington, D.C. (Photo by Mark Wilson/Getty Images)

  • Shooting survivor and former congresswoman Gabrielle Giffords (D-AZ) (L) speaks during a Senate Judiciary Committee hearing on gun violence, January 30, 2013 in Washington, D.C. (Photo by Mark Wilson/Getty Images)