How Do I Become a K-Nonimmigrant as the Spouse or Child of a U.S. ...
( K-3 and K-4 Visa Classifications) Background ... A person may receive a K-3 visa if that person has: ... the non-citizen wishes to apply for the K-3/K-4 visa. ...
http://www.uscis.gov/portal/site/uscis/menuitem.5af9bb95919f35e66f614176543f6d1a/?vgnextoid=d0e2194d3e88d010VgnVCM10000048f3d6a1RCRD&vgnextchannel=48819c7755cb9010VgnVCM10000045f3d6a1RCRD