In 1990, the Michigan Chamber of Commerce sought to run this ad but the Supreme Court, in Austin v. Michigan Chamber of Commerce, upheld the state law banning such communications.  In January, the Supreme Court overruled Austin v. Michigan Chamber of Commerce and held that such ads are constitutionally protected.  So, twenty years after the Chamber was shut out, the group now seeks a Declaratory Ruling from Michigan.  The request is here.  (Thanks to the alert reader who brought this to my attention.)