In the UAE, immigrant visas are processed only at the Embassy in Abu Dhabi. The Consulate General in Dubai does not process immigrant visas. Immigrant visas entitle the recipients to permanent resident status in the United States. Permanent residents, or "Green Card" holders, may live and work in the U.S. They may also eventually "naturalize" to become U.S. citizens, if they so desire. To contact the Immigrant Visa Unit at the Embassy, you may click here.
For general information on Immigrant Visas & Fiancé(e) Visas, please refer to the Department of Homeland Security, Bureau of Citizenship and Immigration Services (formerly INS) website.