I'm also an intact American. I can understand your insecurity, the fact is that surveys show, when asked what they prefer, women typically say that they prefer what they view as normal (European surveys prefer intact, American ones cut). That being said, even among women who care, it's typically not a big deal. My current girlfriend had never heard of a penis with a foreskin before dating me. Now, every time we watch porn together she complains that the guys look incomplete. She's learned some fun little tricks to play around with it, really enjoys how easily she can give me a hand job without any lube, and says that I'm more responsive (some speculate intact men have more feeling in their penis).
There was an interesting study of American women. The survey asked women in relationships how often they climaxed through intercourse and the state of their partner. The study found that women are slightly more likely to climax with an intact man. They speculate that the foreskin acts as a natural lubricant.
If you feel self conscious about it just be sure to keep it clean and maybe let your state slip in an off the cuff joke so a girl isn't surprised. Don't be apologetic about it, just let it be known beforehand.
In the end, if a girl wants you, she'll want the cock attached to you, no matter what it looks like.