BY PAUL SHERMAN
AND JEFF ROWES

Was Dear Abby a career criminal? Can "The Dr. Oz Show" show be censored? Absolutely—at least according to the Kentucky attorney general and the state's Board of Examiners of Psychology, which just banned one of the most popular advice columns in the United States from all of Kentucky's newspapers.

This act of censorship has forced a showdown in federal court over one of the most important unanswered questions in First Amendment law: Can occupational-licensing laws—which require the government's permission to work—trump free speech? Some government licensing boards, which function increasingly as censors, certainly think the answer is yes.

Consider the ...