I would only point to the fact that two years ago, several large corporations were caught employing companies whose business was telling you how to write a job requirement so it would legally disqualify american candidates.

The fact that such companies exist is evidence that corporations prefer to hire cheap labor.

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I'm sure we welcome entrepeneurs. We don't welcome bachelor and masters degree competitors for our jobs who are making $33 to $66 an hour and working 60 hours a week. Of course companies want to hire people like that. Left unchecked, companies also hired 12 year olds and worked them 14 hours a day in locked factories. (And actually- still do out side of america).