Mary Claire Cheney (born March 14, 1969) is the younger daughter of Dick Cheney, the former Vice President of the United States, and his wife, Lynne Cheney.
She is politically conservative and is involved with a number of political action groups.In 2013, she was a signatory to an amicus curiae brief submitted to the U.S.
Supreme Court in support of same-sex marriage during the Hollingsworth v.