Mary Lou Serafine discusses the value of certification and some of the finer points of the First Amendment case Serafine v Branaman on the podcast series Your Weekly Constitutional. From their website:
Commercial Speech. There are many laws regulating advertising. But – wait – advertising is speech. Isn’t that protected by the First Amendment? How do we get away with regulating it? We’ll speak with law professor Tamara Piety of the University of Tulsa, an expert on the subject. We’ll also speak with attorney Mary Lou Serafine, who recently challenged a Texas regulation that prohibited her from calling herself a “psychologist” despite extensive professional training. Join us!