第十五條修憲 (1870) Section 1. The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of race, color, or previous condition of servitude.
聯邦決定女性投票權第十九條修憲(1920)
The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of sex.