The District was granted presidential voting rights by the 23rd Amendment in 1961. The 23rd Amendment was ratified which granted the people of the Washington, D.C., the right to vote for the president. This was done by giving them the same number of Electoral College votes they would get if they were a state, but the number of votes must be no more than the least any state has; this works out to three Electoral College votes. The amendment reads, "A number of electors of President and Vice President equal to the whole number of Senators and Representatives in Congress to which the District would be entitled if it were a State, but in no event more than the least populous State". The 23rd Amendment could complicate statehood, because it would apply even if the federal district was shrunk, and undoing the amendment requires another amendment. Congress must operate from a district it controls, but it can be no larger than ten miles on a side; the 2021 statehood bill got around this by proposing the federal district be shrunk to an area roughly the size of the National Mall.