The US District Court for the District of Massachusetts held that a section of the Defense of Marriage Act (DOMA) violates the equal protection rights of same-sex couples. Section three of DOMA, provides that "marriage" and "spouse," for purpose of federal law, include only the union of one man and one woman. In this case, a group federal employees sued the federal government's Office of Personnel Management, contending that they, as same-sex couples married in Massachusetts, were denied certain federal marriage-based benefits that are available to similarly situated heterosexual couples. In granting summary judgment in favor of the plaintiffs, the court ruled that DOMA had no rational basis and violated the principles of equal protection embodied in the Due Process Clause of the Fifth Amendment. The ultimate impact of this case is not yet unknown. However, if the case is upheld on appeal and followed by other circuits, mandated benefits provided to heterosexual couples would also have to be made available to same-sex couples. (Gill v. Office of Personnel Management, D. Mass. 2010)