About two dozen judges sit on the U.S. 6th Circuit Court of Appeals in Cincinnati, but they typically hear cases in panels of three.
The judges scheduled to hear Wednesday's same-sex marriage arguments are:
Senior Judge Martha Craig Daughtrey: Previously a prosecutor and state criminal appellate judge in Nashville. Married to a retired political columnist for The Tennessean. Appointed by Democratic President Bill Clinton in 1993.
Judge Jeffrey S. Sutton: Former clerk for U.S. Supreme Court Justices Lewis Powell Jr. and Antonin Scalia, later the state solicitor of Ohio. Appointed by Republican President George W. Bush in 2003.
Judge Deborah L. Cook: Previously a justice on the Ohio Supreme Court. Appointed by Republican President George W. Bush in 2003. Was discussed in 2008 as a possible nominee for the U.S. Supreme Court had Republican John McCain been elected president.
The cases to be argued:
Kentucky: Gregory Bourke v. Steve Beshear, Timothy Love v. Steve Beshear. Kentucky's governor appeals district court orders that declared unconstitutional Kentucky's prohibition against recognizing valid out-of-state same-sex marriages, and its prohibition against issuing same-sex marriage licenses within the state.
Tennessee: Valeria Tanco v. William Haslam. Tennessee's governor appeals a district court's preliminary injunction finding that certain Tennessee statutes invalidating same-sex marriage are unconstitutional and enjoining enforcement of those statutes.
Ohio: James Obergefell v. Lance D. Himes, Brittani Henry v. Lance D. Himes. Ohio officials appeal a district court order requiring Ohio to recognize valid out-of-state same-sex marriages and to recognize same-sex marriages on death certificates issued by the state.
Michigan: April DeBoer v. Richard Snyder. Michigan's governor appeals a district court order striking down Michigan's constitutional amendment banning same-sex marriage as a violation of the Fourteenth Amendment's equal protection clause.