The Sixteenth Amendment (Amendment XVI) to the United States Constitution allows Congress to levy an income tax without apportioning it among the states on the basis of population. It was passed by Congress in 1909 in response to the 1895 Supreme Court case of Pollock...

Fifteenth Amendment to the United States Constitution The Fifteenth Amendment (Amendment XV) to the United States Constitution prohibits the federal government and each state from denying or abridging a citizen's right to vote "on account of race, color, or previous...

Fourteenth Amendment to the United States Constitution The Fourteenth Amendment (Amendment XIV) to the United States Constitution was adopted on July 9, 1868, as one of the Reconstruction Amendments. Usually considered one of the most consequential amendments, it...

Thirteenth Amendment to the United States Constitution The Thirteenth Amendment (Amendment XIII) to the United States Constitution abolished slavery and involuntary servitude, except as punishment for a crime. The amendment was passed by the Senate on April 8, 1864,...

Twelfth Amendment to the United States Constitution The Twelfth Amendment (Amendment XII) to the United States Constitution provides the procedure for electing the president and vice president. It replaced the procedure in Article II, Section 1, Clause 3, under which...

Eleventh Amendment to the United States Constitution The Eleventh Amendment (Amendment XI) is an amendment to the United States Constitution which was passed by Congress on March 4, 1794, and ratified by the states on February 7, 1795. The Eleventh Amendment restricts...