Evolution of the national citizenry By danielaamm 1790 Nationality Act of 1970 1803 Importation Ban (Negro,Mulatto, POC) 1848 Treaty of Guadalupe Hidalgo 1857 Dred Scott V Sanford 1863 Emancipation Proclamation 1864 Immigration Act of 1864 1868 14th Amendment 1870 Naturalization Act 1882 Immigration Act of 1882 1896 Plessy v Ferguson 1924 Indian Citizenship Act 1982 Plyer v Doe 1992 Cable Act of 1992 2002 Homeland Security Act 2017 Muslim Travel Ban