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 J. Cooper, a former top official in the Reagan Justice Department 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. 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...