> we need to sympathize with employers in situations like this, at times
Of course, at times, yes. Not at this time in American history, clearly.
> When their business is crucial to society and can't function without the workers at the given price
Yes, absolutely, if by "given price" you mean "the price Americans should reasonably be paid". But this particular combination of two things is probably nonexistent.
> a business should fail because of a politically imposed scarcity of labor?
Again, probably not what would actually happen. If businesses are forced to hire Americans, they would not "fail". Rather, investors/leadership may choose to go do some other more-profitable business, but not because the business can't survive. We are talking about the lack of socially normal humans in US leadership, not economic constraints. I.e. the kind of person you have to compel to be a non-negative force in society via legislation. Not every country, now or in history, has to deal with this problem. It's definitely a weird one. But it's what we're dealing with right now. Yes, there have always been unscrupulous Scrooges among those running things, but often their goals happen to benefit society as a whole enough that we don't have to step in this dramatically.
Of course, at times, yes. Not at this time in American history, clearly.
> When their business is crucial to society and can't function without the workers at the given price
Yes, absolutely, if by "given price" you mean "the price Americans should reasonably be paid". But this particular combination of two things is probably nonexistent.
> a business should fail because of a politically imposed scarcity of labor?
Again, probably not what would actually happen. If businesses are forced to hire Americans, they would not "fail". Rather, investors/leadership may choose to go do some other more-profitable business, but not because the business can't survive. We are talking about the lack of socially normal humans in US leadership, not economic constraints. I.e. the kind of person you have to compel to be a non-negative force in society via legislation. Not every country, now or in history, has to deal with this problem. It's definitely a weird one. But it's what we're dealing with right now. Yes, there have always been unscrupulous Scrooges among those running things, but often their goals happen to benefit society as a whole enough that we don't have to step in this dramatically.