Earlier in May, both Delaware and Rhode Island [JURIST reports] approved same-sex marriage legislation. In March the US Supreme Court heard oral arguments in two same-sex marriage cases. The first case, Hollingsworth v. Perry [JURIST report], examines the validity of Proposition 8 [JURIST news archive], a California referendum that revoked same-sex marriage rights. In the second case, United States v. Windsor [JURIST report], the court will examine the constitutionality of Section 3 of the federal Defense of Marriage Act (DOMA) [text; JURIST news archive]. The court granted certiorari [JURIST report] in the two cases in December. Both cases could have an important impact on the ongoing same-sex marriage controversy in the US.