This is America where our constitution guarantees freedom of speach. However, be sure your speach is accurate and truthful.
You could still be sued for your statements, but truth is an affirmative defense in a defamation law suit. The problem is, even if everything is truthful, you could still spend thousands of dollars defending yourself in a law suit.
Be sure you are prepared for this eventuality if you take this course of action.
This post is provided for general informational purposes only and is not intended to be legal advice specific to you. This general information is not a substitute for the advice of an attorney in your jurisdiction. The attorney client relationship is not established by this post.