Mary Cheney, right, the openly gay daughter of Vice President Dick Cheney, stands with Heather Poe, left, her partner of 15 years, as they attend a memorial observance on the South Lawn of the White House in Washington in this Monday, Sept. 11, 2006 file photo. The decision to become pregnant and raise a child with her female partner was not political, Mary Cheney, a daughter of Vice President Dick Cheney, told a Barnard College audience. AP Photo logo AP Photo 36 months ago

Mary Cheney, right, the openly gay daughter of Vice President Dick Cheney, stands with Heather Poe, left, her partner of 15 years, as they attend a memorial observance on the South Lawn of the White House in Washington in this Monday, Sept. 11, 2006 file photo. The decision to become pregnant and raise a child with her female partner was not political, Mary Cheney, a daughter of Vice President Dick Cheney, told a Barnard College audience.