This is the information for k1 visa under services. Visas for Fiancé(e)s of U.S. Citizen.
If you are a U.S. citizen who wants to bring your foreign fiancé(e) to the United States in order to get married, you will need to file a Form I-129F, Petition For Alien Fiancé(e). This is the first step to obtaining a K-1 non-immigrant visa for your fiancé(e). The K-1 non-immigrant visa is also known as a fiancé(e) visa.
In order to obtain a K-1 fiancé(e) visa, you and your fiancé(e) must intend to marry each other within 90 days of your fiancé(e) entering the U.S as a K-1 non-immigrant. Your marriage must be valid, meaning both you and your fiancé(e) have a bona fide intent to establish a life together and the marriage is not for the sole purpose of obtaining an immigration benefit.
If your fiancé(e) marries you within 90 days of being admitted to the United States as a K-1 nonimmigrant, he or she may apply for lawful permanent resident status in the United States (a Green Card).
If you have already married, plan to marry outside the United States, or your fiancé(e) is already residing legally in the United States, your spouse or fiancé(e) is not eligible for a fiancé(e) visa. Go to the Bringing Spouses to Live in the United States as Permanent Residents page for more information about how to help your foreign spouse apply for a Green Card.