Actions have consequences, and for every action, there is a reaction. When people leave work, there may be consequences. When people fire workers, one has to assess motivation.
I suspect these employers did not consider the possible ramifications of their actions. They may be sued. They may have to defend their action in unemployment claim cases. They may face boycotts. They may have difficulty finding replacements. Good luck finding non-immigrant replacements!
A well reasoned argument is like a diamond: impervious to corruption and crystal clear - and infinitely rarer.
Here, as elsewhere, people are outraged at what feels like a rigged game -- an economy that won't respond, a democracy that won't listen, and a financial sector that holds all the cards. - Robert Reich