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Lawyer’s gay marriage fight hits close to home

The conservative lawyer who defended California’s ban on gay marriage at the Supreme Court is at work on another project: planning his daughter’s upcoming same-sex wedding ceremony.

Charles Cooper, a former top official in the Justice Department during the Reagan administration and onetime ‘‘Republican lawyer of the year,’’ learned of his daughter’s sexual orientation during the legal battle over California’s Proposition 8, according to journalist Jo Becker’s soon-to-be-released book chronicling the movement to legalize same-sex marriage.

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Ashley Lininger became engaged to a woman identified in the book only as Casey just after the Supreme Court accepted the Proposition 8 case in December 2012. Cooper, a noted Supreme Court practitioner, argued the case in March 2013.

The court ruled against Cooper’s clients, saying they did not have legal standing to challenge a federal district judge’s ruling that the ban was unconstitutional.

Same-sex marriages then resumed in the nation’s most populous state.

Cooper joins a list of prominent Republicans — former vice president Dick Cheney and Senator Rob Portman of Ohio among them — with children whose interests are at odds with party orthodoxy on gay marriage.

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