Mary Cheney got married less than two weeks ago to longtime partner Heather Poe.
But that didn't stop her from contributing $2,500 to the presidential campaign of Mitt Romney, according to the blog Petrelis Files. Romney signed a National Organization for Marriage pledge to support a federal constitutional amendment defining marriage as between one man and one woman.
Romney has also pledged to defend the Defense of Marriage Act in court. The Obama administration no longer defends DOMA, the 1996 law banning federal recognition of gay marriage.
Cheney and Poe wed in Washington DC on 22 June, the 20th anniversary of their first date.
The daughter of former US Vice President Dick Cheney wrote on Facebook on her wedding day: 'Very happy to announce that as of this morning, Heather and I are legally married (at least in DC).'
The couple live in Virginia and are the parents of two children, a 5-year-old son named Samuel and a 2-year-old daughter named Sarah.
A staunch conservative, Dick Cheney finally endorsed same-sex marriage in 2009. Five years earlier, the Bush-Cheney administration supported the Federal Marriage Amendment, a proposed amendment to the US Constitution that would limit marriage to heterosexual couples and also ban civil unions and domestic partnership benefits.
Mary Cheney did not publicly express her opinion of the amendment at the time but in her 2006 autobiography, she wrote that she was against the amendment.