Your prenuptial is confidential. So long as you, your fiance and your attorney (who is bound by law to confidentiality) do not disclose its existence, it remains a secret.
Good Luck and Congratulations on your marriage.
Sheryl Rae Ghezzi
The Illinois attorney is right, for the most part. I add the qualifier because, for certain aspects of the prenup to be given effect under Nevada law, it is possible that it may have to be recorded (for example, if you included an inventory of separate property under some very old Nevada statutes). However, a private agreement is just that -- a private agreement. That said, you should not presume what effect there might be, but ask a qualified immigration attorney -- and in any event, do not lie about anything you are asked about.