None.
They are a PRIVATE SECTOR company meaning they can ban ANYTHING they deem "inappropriate" First Amendment. Other than that almost everyone they contract for is a private company, therefore they don't have to care about your First Amendment either. And to answer your question NONE. ABSOLUTELY ZERO Which is understandable they don't want to increase liability
You do not have the freedom of speech. My ex had to watch what he said everywhere he went. They do not care about their employees
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