The fiancé (e) visa is a non-immigrant visa.It is also known as the K-1 visa.It is for the foreign fiancé (e) of a US citizen.It allows foreign nationals to come to the U.S. to marry.The applicant has to marry within 90 days of coming to the US.
After marriage, the applicant can apply for adjustment of status.The adjustment of status is for becoming a permanent resident (LPR).It has to be applied to the DHS (Department of Homeland Security).The eligible children of the applicant can get the K-2 visas.