War had been fought over issues of States' rights, including the right to control the institution of slavery. The Thirteenth Amendment officially abolished slavery.The Fourteenth Amendment offered a significant bundle of citizenship rights. Handout B: Slavery and the Constitution ; 3. Article I, Section 9, Clause 1, Congress outlawed the importation of slaves in 1808. In this activity, you will compare and contrast the founding story of America's fight for liberty with the founding story of existence of slavery. The Reformation Amendments that followed further expanded the freedoms and rights of African Americans. There, Pennsylvania passed an anti-kidnapping law, providing protections for those accused of being fugitive slaves. The adoption of the 14th Amendment in 1868 guaranteed citizenship to those born or naturalized in the United States, including former slaves. Attach Request to Restore Right to Possess or Own Firearms.