I could not comment w/o seeing the divorce certificate, but paperwork confirming that your ex-wife is divorced from you may be enough. If that paperwork shows that the divorce is finalized, that may be all you need for the K-1 process. Again, however, that paperwork should be reviewed by an immigration attorney before proceeding with the K-1 process.
You can find info on the K-1 process at:
http://www.familytousa.com/fiance-petition-k-1-visa/
Regards,
Andrew M. Wilson, Esq.
Serotte Reich Wilson, LLP
www.srwlawyers.com
awilson@srwlawyers.com
Answered on Feb 17th, 2012 at 6:01 PM