Here is the case of Hays v.Cave being discussed in a scholarly journal. We reported on it in May and Cassandra Crotty of Illinois Legal Malpractice Blog reported on it shortly thereafter. The gist of this case is that there can be no removal based simply on the idea that the defense to legal malpractice will depend on federal criminal practice. Rather, it takes jurisdiction: diversity or federal question. Defense on federal criminal practice is not a federal question.