In general, the K-3 visa is useless and outdated because of changes in processing times. The K-3 is a hybrid visa and combination of the K-1 and immigrant visa options. It was created because based on previous processing times, it was much faster for a fiance to obtain a K-1 than a spouse to obtain an immigrant visa. Now that those processing times are similar, the K-3 is not used very often.
In general, your options would be to use the K-1 as a fiance or marry and pursue the immigrant visa. There are various pros/cons to each strategy that should be reviewed through a consultation with an immigration attorney. One is not necessarily better than the other, and whichever is the best fit depends on your specific situation.
You can find some helpful information on each option at:
http://www.familytousa.com/fiance-petition-k-1-visa/
http://www.familytousa.com/i-130-immediate-relative/
http://www.familytousa.com/immigrant-visa-processingconsu/
Regards,
Andrew M. Wilson, Esq.
Serotte Reich Wilson, LLP
www.srwlawyers.com
awilson@srwlawyers.com
Answered on Jul 03rd, 2012 at 4:36 PM