Jim Obergefell, the lead plaintiff in the same-sex marriage case Obergefell v. Hodges, the case that could determine the constitutionality of marriage for same-sex couples, smiles as he walks out of the US Supreme Court in Washington, DC, June 18, 2015. (JIM WATSON/AFP/Getty) Jim Obergefell, the plaintiff in the case which legalised marriage equality across