Meanwhile, the Supreme Court is expected to weigh in on same-sex marriage. The court could rule whether states have the right to prohibit gays and lesbians from civil marriage. Separately, the court is expected to decide whether the federal government must recognize such unions.

President Obama reaffirmed his backing for same-sex marriage rights last week in Germany. “When we stand up for our gay and lesbian brothers and sisters and treat their love and their rights equally under the law, we defend our own liberty as well. We are more free when all people can pursue their own happiness," he said.

Wednesday, Obama departs on a weeklong trip to Africa.