No, you just want to subsidize producer workers' salaries by limiting the labor pool (to the extent some people willing to take a particular job are not allowed to take that job, the labor pool is being limited).
Of course, those Americans working the fields are going to need those higher wages - as you say and hope, their grocery bill will be going up (and the bill at McDonalds, etc.)
Thanks for the clarification. I spoke to an uninsured Arizona driver last night, and she wants to know when she can expect your subsidy check in the mail.