In general, Minnesota law provides a remedy to those who have been defamed. Defamation consists of (1) a statement of fact that tends to injure one's reputation; (2) which is communicated to another; and (3) that the speaker knew or should have known to be false.
Lawyers love disclaimers, but so does the U.S. Trademark office, but not for the reasons you'd think. This blog explains disclaimers in this narrow context and why these disclaimers give rights to the public, rather than taking them away.