The process of securing the marriage visa after your marriage to a US national although is a well-defined procedure but still it takes lot of time for completion (currently the waiting period is around 7-8 months). It is always good if you can route the process of filing for the marriage visa through the reputed immigration attorneys. They will know the exact procedure. Along with they will guide you about what works well to secure the visa and what doesn’t work.
Still along with hiring the immigration attorneys you should also know for yourself about how the application is processed and what is timeframe for the application. The application for your marriage visa has to be filed by the US citizen. The application for the visa is submitted and processed by USCIS. Upon its approval it is routed to the National Visa Centre (NVC). It is here in the National Visa Centre that you application is given a consulate case number. At NVC some more paperwork is done in relation to your application and it is also possible that this work might be done at the concerned consulate.
In maximum cases the work is done at the consulate instead of NVC and when they are satisfied they will send the letter to you confirming your appointment for appearance at the consulate and it will contain details about what you will need to bring with you at the consulate and what procedures you need to complete. Here it is important that you consult the immigration attorneys regarding the documents and their correct format to avoid any hassles at the time of visa stamping.
In the next step, the foreign spouse will appear for an interview at the US consulate with all the required documents and proof of marriage along with a passport that must have validity of another six months after the appointment date and then you will receive your stamped visa on the passport upon successful interview. After this you can enter on your K3 marriage visa in a period of 6 months.