Hi Gilles ---

>I am actually in the opposite case... I am an independent developer in Geneva (Switzerland) working on VFP and I really find the European market very small... And it would be a dream to have contacts with USA (telecommuting or travel for a small period of time...)
>I ask also the question... Is it difficult for an european developer to have contracts and work in USA ?

You have to be sponsored by an employer as an employee (an H1-B visa). I don't know if there is a trick around that but I don't think so. You also have to have a degree applicable to employment.