Hiya eddiek,
After agree with the other guys, basically prenups are not worth the paper there are written on.
Stastistics as I have posted before from the US Census Bureau put as follows:
Western/Western marriage divorce rate 57%
Western/Foreign marriage divorce rate 20%
So take it from there, I know some of the forum members have been divorced from there foreign partners but you have to ask yourself like Joe has put about having a prenup might constitute to doubts about the person you plan to marry.
Food for thought...