Change of Address Form (AR-11): http://www.uscis.gov/files/form/ar-11.pdf
Diversity Visa Lottery: http://www.dvlottery.state.gov
Electronic System for Travel Authorization (ESTA): http://www.cbp.gov/xp/cgov/travel/id_visa/esta
Employment Eligibility Verification (Form I-9): http://www.uscis.gov/files/form/I-9.pdf
E-Verify: http://www.dhs.gov/files/programs/gc_1185221678150.shtm
I-9 Handbook for Employers: http://www.osha.gov/pls/epub/wageindex.download?p_file=F6844/I9_Handbook.pdf
I-94: www.cbp.gov/I94
Internal Revenue Service: http://www.irs.gov
Office of Foreign Labor Certification: http://www.foreignlaborcert.doleta.gov
PERM Processing Times: http://icert.doleta.gov/#fragment-2
Program Electronic Review Management (PERM): http://www.plc.doleta.gov
Student and Exchange Visitor Program (SEVIS): http://www.ice.gov/sevis/index.htm
United States Citizenship and Immigration Services (USCIS): http://www.uscis.gov/portal/site/uscis
USCIS Case Status: https://egov.uscis.gov/cris/Dashboard.do
US Customs and Border Protection (CBP): http://www.cbp.gov
US Department of Labor (DOL): http://www.dol.gov and http://www.doleta.gov
US Department of State (USDOS): http://www.state.gov
US Consulates and Embassies: http://www.usembassy.gov
US Immigration and Customs Enforcement (ICE): http://www.ice.gov
US Social Security Administration: http://www.ssa.gov
Visa Application Forms: http://www.travel.state.gov/visa/frvi/forms/forms_1342.html
Visa Bulletin: http://www.travel.state.gov/visa/frvi/bulletin/bulletin_1360.html
Visa Wait Times at U.S. Consulates and Embassies: http://travel.state.gov/visa/temp/wait/tempvisitors_wait.php