The digital collections of the Library of Congress contain a wide variety of primary source materials associated with the 14th Amendment to the US Constitution. The 14th Amendment wrote the Declaration of Independence's promise of freedom and equality into the Constitution.It transformed the Constitution forever. The 14th Amendment established African Americans as equal citizens of the United States. This amendment overturned the 1857 Dred Scott v. The 13th Amendment formally abolished slavery. The 14th Amendment established African Americans as equal citizens of the United States. Showing 45 Guides ; Nov 19, 2024 20345. 13th Amendment to the U.S. Constitution: Primary Documents in American History ; Nov 19, 2024 15744. The Citizenship Clause broadly defines citizenship, superseding the Supreme Court's decision in Dred Scott v.