Vice President Joe Biden on Wednesday used a tribute to 19th-century abolitionist Frederick Douglass to renew the call for equal voting rights for people who live in the nation's capital.

During a ceremony unveiling a statue of Douglass in the Capitol, Biden hailed Douglass' work advocating equal justice, and noted that Douglass supported complete voting rights for residents of the District of Columbia, where Douglass once lived.

Although each of the 50 states was allowed two statues of notable citizens in the Capitol, the District of Columbia was not allowed any statue until a measure passed by Congress last year. Residents chose to honor Douglass, whose home near the Anacostia River is a national historic site.

Biden said he and President Barack Obama back Eleanor Holmes Norton, the District's nonvoting delegate to Congress, in her effort to bring statehood and full voting rights to the city.

"The people of the District made the right choice in selecting Frederick Douglass as their representative, and they put both Eleanor Holmes Norton and Frederick Douglass in this Capitol and, quite frankly, I don't see either of them leaving until all the District residents get their voice," the vice president said.