Department of Homeland Security (DHS)
http://www.dhs.gov

United States Citizenship and Immigration (USCIS)
http://www.uscis.gov

USCIS Case Status Online
https://egov.uscis.gov/cris/Dashboard/CaseStatus.do

USCIS Compilation of Laws, Regulations and Guides
http://www.uscis.gov/portal/site/uscis/

US Customs and Border Protection
http://www.cbp.gov

US Immigration and Custom Enforcements
http://www.ice.gov

Executive Office for Immigration Review
http://www.usdoj.gov/eoir/

US Department of Justice
http://www.usdoj.gov/

US Department of Labor
http://www.dol.gov/

Employment and Training Administration
http://www.doleta.gov/

Prevailing Wage Information
http://workforcesecurity.doleta.gov/foreign/wages.asp

VISA Bulletin
http://travel.state.gov/visa/frvi/bulletin/bulletin_1770.html

US Embassy and Consulate Information
http://www.usembassy.gov/

Foregin Affairs Manual
http://www.state.gov/m/a/dir/regs/

Federal Registry
http://www.gpoaccess.gov/fr/

Social Service Administration
http://www.ssa.gov/SSA_Home.html

Defense Immigration Project
http://www.nysda.org/html/nysda_resources.html