Immigration Timeline By micarlso Apr 30, 1795 Naturalization Act Apr 30, 1812 War of 1812 Brought Immigration to a hault. Period: Apr 30, 1820 to Apr 30, 1880 Big time for immigrants Over ten million immigrants arrived in the states, mainly in the midwest. Apr 30, 1850 First decade for the Immigration to rise about 1 million Apr 30, 1898 Spanish-American War Apr 30, 1917 Literacy test becomes a law for incoming immagrants Apr 30, 1918 WW1 Apr 30, 1965 The Immigration Act Apr 30, 1986 The Immigration Reform and Control Act of 1986 Apr 30, 1990 The Immigration Act of 1990 Apr 30, 1995 Proposition 187 enacted by California Legislature Apr 30, 1996 Welfare Reform Reconcilliation Act Apr 30, 2001 9/11 Apr 30, 2002 U.S. Patriot Act Apr 30, 2010 SB 1070, Arizona Law Passed