Earlier quoted context omitted.
You're not a liberal if you're casually violating fair housing law :) Everyone wants to call themselves a liberal or progressive nowadays, it's bizarre. These things are about actions, not self-assigned labels.
Is visa status a protected class for rentals in CA/Berkley?
As a former lawyer, I realize it's possible to make the argument, but it's probably clear from the legislative history of the law that it's meant to protect people who are on visas, not people who aren't.
Also, she would probably say that her rule is that she only rents to people who have an extremely compelling reason to leave after 1-2 years. Compelling reasons include time-limited positions (postdocs) or visa restrictions.