Government Agencies
United States Citizenship and Immigration Service
www.uscis.gov
Department of State Visa Bulletin
http://travel.state.gov/visa/bulletin/bulletin_1360.html
Application Processing Times
https://egov.uscis.gov/cris/processTimesDisplayInit.do
Online Case Status Information
https://egov.uscis.gov/cris/caseStatusSearchDisplay.do;jsessionid=bacod4OztZvn78_z5
Civil Surgeon Locator (for medical examinations)
https://egov.uscis.gov/crisgwi/go?action=offices.type&OfficeLocator.office_type=CIV
Social Security Administration
http://www.ssa.gov/immigration