KANSAS CITY, Missouri, Jan. 30 -- The office of the U.S. Attorney for the Western District of Missouri issued the following news release: * * * Criminal Enterprise Employed Unauthorized Workers at Dozens of Mexican Restaurants Across the Midwest * * * Seven defendants, including an owner, president, chief financial officer, and controller of a Joplin, Mo., corporation, have pleaded guilty in federal court to their roles in a racketeering conspiracy to transport, hire, and harbor undocumented  more