The Rust Belt States? Detroit? About all they've got left are captive industries, and then only the parts of those remaining are the parts that can't outsource.
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"you want the cheap labor to bust the unions "
There's nothing wrong with cheap labor or busting unions.
There is if you're using or encouraging illegal foreign labor to do it while forcing the taxpayers to subsidize that labor. It's the whole point of these threads, or haven't you noticed?