A nation of 330 million do not need to import ANY new workers for any reason what so ever.
Totally agreed, central_va!
Let employers design their seasonal jobs to attract college students, or mothers, or whatever. Let them pay better and let them consider more the working conditions they are providing.
Half the time our government seems to be fretting about automation putting people out of work and half the time they are worrying about how to import more low-skill workers.
It is the investment in automation that increase worker productivity and allows workers to earn more. And we already have more than enough low-skill folks of our own to find good jobs for!