Article I provides for the creation of a federal district to be the nation’s capital, but it does not deal with suffrage for the District of Columbia’s residents. Some scholars argue that the District of Columbia, like any other federal territory, was to be eligible for statehood once it reached sufficient population. Others believe that the District, which was once part of Maryland, must always remain under congressional control to preserve national interests. In 1960, Congress proposed the Twenty-third Amendment to give D.C. residents the vote in presidential elections, and it was ratified in 1961. However, D.C. residents remain the only U.S. citizens who pay federal income taxes and have no voting representation in Congress.