U.S. Citizenship and Immigration Services (USCIS)
http://www.uscis.gov/portal/site/uscis
USCIS InfoPass
http://infopass.uscis.gov/
USCIS – Processing Times and Case Status Check
https://egov.uscis.gov/cris/jsps/index.jsp
U.S. Department of Labor, PERM Processing Times
http://icert.doleta.gov/
U.S. Customs and Border Protection (USCBP)
http://www.cbp.gov/
Diversity Lottery
http://travel.state.gov/visa/immigrants/types/types_1322.html
Visa Bulletin
http://travel.state.gov/visa/bulletin/bulletin_1360.html
U.S. Consulates Abroad
http://www.usembassy.gov/
American Immigration Lawyers Association
http://www.aila.org/
Visa Wait Time Information