To be fair the median expert witness retainer is $2,000 and their fee may be a few hundred dollars per hour. So let’s say this professor was getting paid even

To be fair the median expert witness retainer is $2,000 and their fee may be a few hundred dollars per hour. So let’s say this professor was getting paid even 100% of their salary on this one case, that is pretty meager fee to act inappropriately or commit the crime of perjury…which is the context of the university claiming their is a conflict and they would only permit the professor to act as a witness against the government if they don’t receive compensation. Even a fee matching their annual salary is meager fee in context of an act that would result in sanctions and inability to ever act as a expert witness again and/or termination of their non-tenured professorship as well as the professional humiliation.