Lawsuits are a blunt instrument. Besides, there aren't many non-lefties to replace the professoriate, since conservatives have largely abandoned the liberal arts for "practical" fields.
I don’t entirely disagree, but we are all but abandoning the higher education of our youth to people who wish to destroy our way of life.
Hillary Clinton is a good example. She was exposed to a leftist influence in her later year(s) in high school. That assh—e turned her from a Goldwater Girl to a died in the wool Marxist. He latched on to her and kept in touch for something like 20-30 years.
Look what the turning of one individual has wrought.