U.S. Embassy Maseru does not adjudicate petitions relating to immigration
Petitioners residing overseas will no longer be able to file forms I-130,Petitions for Alien Relative, with U.S. Embassies and Consulates except in locations where U.S. Citizenship and Immigration Services (USCIS) has a public counter presence within the Embassy or Consulate. Petitioners residing overseas in countries where USCIS does not have a public counter presence will be required, starting August 15, 2011, to file their Forms I-130 by mail with The USCIS Chicago.
USCIS Chicago Lockbox addresses for regular mail Deliveries:
P.O. Box 804625
Chicago, IL 60680-4107
USCIS Chicago Lockbox address for express mail and Courier deliveries:
131 South Dearborn-3rd Floors
Chicago, IL 60603-5517
For additional information about how to file a Form I-130 with the USCIS Chicago lockbox please see the USCIS Website at www.uscis.gov or contact USCIS by phone at 1-800-375-5283.
Please follow this link for more information: http://travel.state.gov/content/visas/english/immigrate/types/family/fiance.html