One decision covers the Defense of Marriage Act, the other the fate of California's Proposition 8
The Supreme Court will hand down two eagerly sought decisions on civil unions on Wednesday, the last day of the court's current term.
At the close of Tuesday's court session, Chief Justice John Roberts announced that all remaining cases will be announced at Wednesday's session.
One of the civil union cases challenges the Defense of Marriage Act, defining a marriage for federal purposes as being between a man and a woman. The other covers the fate of Proposition 8, which California voters enacted to prevent state officials from moving ahead with issuing licenses for same-sex marriages.