U.S. Border Control By Juusijuusi Apr 14, 1802 The Naturalization Law of 1802 Dec 2, 1823 The Monroe Doctrine Apr 25, 1846 U.S.-Mexican War starts Feb 3, 1848 U.S.-Mexico War ends Feb 10, 1855 Naturalization Act of 1855 Jul 14, 1870 Naturalization Act of 1870 Mar 3, 1875 Page Act Jul 25, 1898 Puerto Rico invaded by the U.S. Dec 6, 1904 Roosevelt Corollary to the Monroe Doctrine Jul 28, 1915 Occupation of Haiti begins Feb 5, 1917 The Immigration Act of 1917 Period: Feb 5, 1917 to Nov 29, 1990 'Gays' and 'lesbians' barred entry Mar 4, 1933 The Good Neighbor Policy starts Period: Aug 4, 1942 to Dec 1, 1964 The Bracero Program Apr 17, 1961 The Bay of Pigs Invasion in Cuba Oct 3, 1965 Immigration and Nationality Act of 1965 Sep 11, 1973 Chilean coup d'état Sep 30, 1987 Supplemental Appropriations Act/Helms amendment Period: Sep 30, 1987 to Nov 2, 2010 Peple with HIV denied entry Mar 12, 1990 Matter of Toboso-Alfonso Nov 28, 1990 Immigration Reform Act of 1990 Nov 29, 1990 Immigration Act of 1990 Period: Sep 21, 1996 to Jun 20, 2013 Defence of Marriage Act Jul 13, 2000 U.S. Congress approves Plan Colombia Apr 11, 2002 Venezuelan coup d'état attempt Nov 2, 2010 HIV removed from a list of diseases that ban people from entering the U.S.