Chicago may be known as the “Second City,” but Markus Funk contends that, in the white-collar world, the U.S. attorney’s office there announced a blockbuster case last summer that is peerless. That case, United States v. Wolff, stands as the nation’s largest ever anti-dumping and food fraud criminal prosecution.  Prosecutors’ aggressive use of the U.S. Code’s most powerful — and underappreciated — obstruction-of-justice statute promises to leave an enduring legal imprint.