United States Citizenship and Immigration Services (USCIS): http://www.uscis.gov
USCIS Online Case Status: https://egov.uscis.gov/cris/jsps/index.jsp
Department of State (DOS): http://www.state.gov/
National Visa Center (NVC): http://travel.state.gov/visa/immigrants/types/types_1309.html
Immigration Visa Bulletins: http://travel.state.gov/visa/frvi/bulletin/bulletin_1360.html
United States Embassies and Consulates: http://www.usembassy.gov/
United States Customs and Border Patrol (CBP): http://cbp.gov/
United States Immigration and Customs Enforcement (ICE): http://www.ice.gov/
Executive Office of Immigration Review (EOIR): http://www.usdoj.gov/eoir/
American Immigration Lawyers Association (AILA): www.aila.org
American Immigration Law Foundation (AILF): www.ailf.org
United Nations High Commissioner for Refugees: http://www.unhcr.org/cgi-bin/texis/vtx/home