Hello,
I can do this job for you. Basically I have an email list which contains US email only with real people.
I dont need to login to your facebook account. All you have to do is send friend request using the feature in facebook "invite friends via email". start inviting 50 emails at first then raise it but don't exceed more than 200 invites per day.
After they accepted your friend invites, invite them to your fan page.
Make sure you make send them a nice message when inviting them because they are 100% real people.
I prefer not to login to your account since my IP address is already associated with many accounts. It might get your account banned.
Please let me know if your interested.
Best Regards,