Attorneys for former Democratic National Committee lawyer Michael Sussmann filed a motion seeking to exclude certain expert testimony from his case, accusing special counsel John Durham’s attorneys of missing a key deadline, and asking a judge to block testimony in his false statement case. The lawyers representing Sussmann, who is accused by the Justice Department of lying to the FBI, said Durham “never once suggested that it intended to call an expert witness,” according to a Friday evening court filing (pdf). “Now—a mere six weeks before trial—the Special Counsel has provided a perfunctory and legally deficient notice that he intends to call Special Agent David Martin of the FBI to offer highly technical and complex testimony at trial,” said the motion, “including (at his sole discretion) on a topic that the Special Counsel has told the Court he does not intend to put at issue at trial, namely, the accuracy of …