You don’t even have to have the wrong opinion now. All you have to do is say that someone has the right to a non-pc opinion and you are fired.
There is no free speech in the USA.
The right to free speech is a restriction on what government can do to those who speak up. As a private institution, these restrictions do no apply to Marquette University. However, Marguette University's policies and adherence to the principles of academic freedom seem to be under a fatal assault. German universities enthusiastically embraced Nazism back in the thirties, so I believe that we can expect universities to adhere to their principles only when it is convenient for them to do so.