The vice president spoke to a supportive crowd at a fundraiser for Iowa senator Tom Harkin on Sunday.
A Romanian gay couple's wedding was featured on the reality show Four Weddings and a Challenge.
Groups claim more time is needed to rally support for same-sex marriage in the state.
The Colville Tribal Council voted Thursday to recognize same-sex marriages among members of its tribe.
The Marriage Matters Ohio campaign kicked off today in Cleveland, Cincinnati, and Columbus.
The New Mexico Supreme Court will hear a case on October 23, which may determine the right to marry for same-sex couples in the state.
Supreme Court Justice Ruth Bader Ginsburg discussed marriage equality and the 'genius' of the Constitution during a speech at the National Constitution Center in Philadelphia.
The tax advantages of marriage will easily pay for a flight to Minneapolis, he notes.