And he NEVER was a Professor of Constitutional Law, he was a lecture at U Chicago's Law School. Lecturer is the lowest level of academic position there is no expectation of tenure. What I have heard and read even that position was too much work for him.
It's like the meme that Bill Clinton was a Rhode’s Scholar. HE NEVER FINISHED! He either just left maybe it required academic effort i.e. work and took too much time from his real interest “getting laid”! Also I have seen some claims he was forced to leave because of some possible rape accusations.
Note Lecturer is one level above academic slave - commonly called graduate student.
I never bought that.
He taught only portions of the Constitution that have been misinterpreted as creating "gibesmedats" and calling it "rights."