The Fortune 250 company I worked for for years also fudged the paperwork so that the IT staffers on H1B earned a lot less than their American counterparts. There was no doubt H1B visas were used to keep the salaries as low as possible and to hire as few Americans as possible. Of course, the entire process was thoroughly lawyered so the company didn’t appear to be breaking any laws… not that the US authorities were looking particularly closely. 