After Marriage on a Fiance/Valid Visa
Typically Takes 4-6 Months
If your fiance came to the USA with a fiance visa, or has held another visa (student, visitor, etc...) for a while, then this option is appropriate. This process is what is required to obtain a 'Green Card' for the holder of a visa. Once obtained, your spouse can work and travel. The initial card is valid for 2 years.