By Eileen M. Martin ( May 13, 2025, 11:05 AM EDT) -- U.S. immigration law uses alphanumeric designations starting with A and ending with V to delineate various temporary non-immigrant classifications. K-1 visas permit entry to the U.S. of fiancé(e)s of U.S. citizens. The strict rules around the K-1 visa make it a challenge for many who might otherwise want to consider it....