>>In 1986, Roberts entered private law practice in Washington, D.C., as an associate at the law firm Hogan & Hartson (now Hogan Lovells) and worked in the field of corporate law.[17] During this time
he worked pro bono for gay rights advocates, reviewing filings and preparing arguments for the 1996 Supreme Court case Romer v. Evans, which was described in 2005 as "the movement's most important legal victory"<< https://en.wikipedia.org/wiki/John_Roberts#Early_decisions
Not sure how we missed this.