Tenure used to provide faculty members with solid protection against all but criminal behavior. But now it is proving no match for weak excuses for firing professors who administrators want to be rid of. Marquette University’s termination of political science Professor John McAdams for speaking his mind about a younger faculty colleague’s handling of a student is one such case. Another case has arisen at Louisiana State University. Teresa Buchanan had been teaching in the education program at LSU’s Baton Rouge campus for nearly 20 years when, in 2015, she was fired for violating the school’s policy against sexual harassment....