which led to the ratifications of the Reconstruction Amendments. Before and during the Civil War, the Southern states prohibited speech of pro-Union citizens, anti-slavery advocates, and northerners in general, since the Bill of Rights did not apply to the states during such times. During the Civil War, many of the Southern states stripped the state citizenship of many whites and banished them from their state, effectively seizing their property. Shortly after the Union victory in the American Civil War, the Thirteenth Amendment was proposed by Congress and ratified by the states in 1865, abolishing slavery. Subsequently, many ex-Confederate states then adopted Black Codes following the war, with these laws severely restricting the rights of blacks to hold property, including real property (such as real estate), and many forms of personal property, and to form legally enforceable contracts. Such codes also established harsher criminal consequences for blacks than for whites. Because of the inequality imposed by Black Codes, a Republican-controlled Congress enacted the Civil Rights Act of 1866. The Act provided that all persons born in the United States were citizens (contrary to the Supreme Court's 1857 decision in Dred Scott v. Sandford), and required that "citizens of every race and color ... [have] full and equal benefit of all laws and proceedings for the security of person and property, as is enjoyed by white citizens." President Andrew Johnson vetoed the Civil Rights Act of 1866 amid concerns (among other things) that Congress did not have the constitutional authority to enact such a bill. Such doubts were one factor that led Congress to begin to draft and debate what would become the Equal Protection Clause of the Fourteenth Amendment. Additionally, Congress wanted to protect white Unionists who were under personal and legal attack in the former Confederacy. The effort was led by the Radical Republicans of both houses of Congress, including John Bingham, Charles Sumner, and Thaddeus Stevens. It was the most influential of these men, John Bingham, who was the principal author and drafter of the Equal Protection Clause. The Southern states were opposed to the Civil Rights Act, but in 1865 Congress, exercising its power under Article I, Section 5, Clause 1 of the Constitution, to "be the Judge of the ... Qualifications of its own Members", had excluded Southerners from Congress, declaring that their states, having rebelled against the Union, could therefore not elect members to Congress. It