Well you can always lie to immigration and do anything you like. The real problen is if you do come from a visa-waiver country - it is almost impossible to get

Well you can always lie to immigration and do anything you like. The real problen is if you do come from a visa-waiver country - it is almost impossible to get a visa, because everybody uses the waiver that if you try and get a business visa to attend a conference they think you must be upto something