State Department:

• Visa Section - Bureau of Consular Affairs
• List of Websites of U.S. Embassies and Consulates
• Reciprocity List
• Visa Bulletin
• Visa Wait Times
• List of E-1 and E-2 Countries
• B-2 Visas for "Significant Others" including Same-sex Partners
• Students and Immigrant Intent  
• Visa Applicants with Drunk Driving Records

Visa Forms:

• Form DS-156
• Form DS-157 (Supplemental Nonimmigrant Visa Application)
• DS-158 (Contact Information and Work History for Nonimmigrant Visa Applicant)
• Nonimmigrant Treaty Trader/Investor Application

Visa Regulations:

• B-1/B-2 Visa Regulations
• E-1, E-2 and E-3 Visa Regulations
• H-1B Visa Regulations
• I-1 Visa Regulations
• L-1 Visa Regulations
• O-1 Visa Regulations
• R-1 Visa Regulations

USCIS:

• Immigration Home Page
• On-line Case Status Service
• Petition Processing Times
• Form AR-11 (Change of Address)
• Form I-129 (Petition for Nonimmigrant Worker)
• Form I-130 (Petition for Alien Relative)
• Form I-131 (Application for Travel Document) 
• Form I-140 (Immigrant Petition for Alien Worker)
• Form I-485 (Application to Adjust Status)  
• Form I-539 (Application To Extend/Change Nonimmigrant Status)  
• Form I-765 (Application for Employment Authorization)
• Form I-907 (Request for Premium Processing)

 US Embassy