We recently discussed how Yale faculty reached academic nirvana after years of purging departments of conservatives and Republicans. The university finally showed zero political donations to Republicans. Now Princeton can claim that it has succeeded in a similar cleansing, according to a new study by Princetonians for Free Speech (PFS). The study shows that 98% of political donations went to Democrats or Democrat-affiliated groups and 0% went to Republicans or affiliated groups.

Political contributions are one measure that helps gauge the degree of ideological orthodoxy and intolerance in higher education. While some academics simply do not make contributions and may still hold conservative views, the study still offers another insight into the political preferences of those who do make such contributions. The study does not mean that we can assume that the number of academics with conservative or libertarian values is zero. (There are obvious outliers such as Robby George). However, few would dispute that it reaffirms the extreme imbalance of ideological views at this and other universities.

Professors often express shock at the thought that there would be any political or ideological litmus test for hiring. I have also opposed such measures. However, the hypocrisy is crushing. Today’s faculty are responsible for a near-complete ideological purging of their ranks. They have created a hostile environment for anyone with conservative or libertarian viewpoints, including students who rarely have the opportunity to hear from a professor from a center-right perspective at most schools.

Most recently, forty percent of college faculty admitted that they would vote against any Trump supporter seeking an academic position regardless of their scholarship or teaching ability. Keep in mind that this is only the professors willing to admit to such bias.

Some are more open than others.

I had dinner with a Harvard Law Professor, who expressed disbelief that I expected him to vote for any faculty applicants who held views he considered wrong. When I noted that I regularly vote for faculty candidates who hold opposing views, he just shrugged and said that, if he rejects their views, he cannot vote for those views to be taught to students.

There are few remaining conservatives or libertarians on law school faculties, which have been purged of dissenting voices through a biased hiring and promotion system. Despite years of complaints and declining public trust in higher education, faculty members continue to reinforce bias and orthodoxy in our schools.

I wrote about the rise of this new McCarthyism on the left seven years ago.

Recently, I discussed the example of Fordham University School of Law professor John Pfaff, who called for “repercussions” for professors who do not “recant” their view that the 14th Amendment does not protect birthright citizenship.

Not long ago, I debated Professor Randall Kennedy at Harvard Law School about the school’s lack of ideological diversity. I respect Kennedy, and I do not view him as anti-free speech or intolerant. Yet when I noted the statistics on the vanishing number of conservative students and faculty in comparison to the nation, Kennedy responded that Harvard “is an elite university” and does not have to “look like America.”

Of course, the problem is that Harvard does not even look like Massachusetts, which is nearly 30 percent Republican.

At schools like Yale and Princeton, they have achieved near 100% for Democrats (with only a couple of percent going for independent or socialist causes). Yet, if you ask faculty about the purging of their ranks, they will often shrug and say that they just cannot find a conservative or libertarian who is intellectually worthy of an appointment to their schools. It was the same absurd rationalization that was once used to justify not hiring minorities or women.

I just had a debate with a William & Mary law professor who admitted there is no other rational explanation for the virtual absence of conservatives and libertarians than systemic bias. Indeed, if a company were to go to court to say that there was nothing intentional in a virtual absence of minority employees, it would be laughed out of court.

Of course, nothing is laughable about the state of higher education. This generation of administrators and faculty are destroying our educational institutions because they cannot set aside their political bias and intolerance for the benefit of their schools. Higher education has reached record lows in public trust. Yet, these professors and deans are insulated from such public opinion. They are often financially insulated from the economic impact of such isolation. In higher education, the echo chamber works to their personal benefit, increasing their opportunities for writing and conferences. They also do not face opposing views of their scholarship or viewpoints.

Recently, I participated in a debate with the President of the American Association of University Professors (AAUP). He doubled down on his call for universities to pursue more political agendas and activism. AAUP later broke its long-standing apolitical tradition and endorsed Abdul El-Sayed in Michigan.

This is why I have advised university presidents who want to restore intellectual diversity that they cannot rely on faculty members. With enough donor and faculty pressure, deans may add a single conservative, but they have shown they are unwilling to make real changes to the academic echo chamber they have created.

In the same way, I have encouraged state legislatures to tie further public subsidies to real and substantial changes in creating intellectual diversity among faculty.