Dacheng, one of the biggest law firms in the People's Republic of China, is set to merge with two major American law firms, Dentons and McKenna Long & Aldridge, making it the largest law firm in the world.The arrangement will bring together a unique arrangement of policy professionals all under the same roof. The new mega-firm will employ, via Dentons: former House Speaker Newt Gingrich, former Democratic National Committee Chair Joe Andrew, and former Rep. Van Hilleary, R-Tenn., among others. McKenna Long's political roster includes: former Democratic National Committee Chair Howard Dean, former D.C. Mayor Anthony Williams, former Rep. Bill Owens, D-N.Y., and former Sen. Gary Hart, D-Colo. Many of the individuals, like Hart, do not have a law degree or practice law, but work in the "government affairs" departments of the two firms, a catch-all phrase to describe lobbying-related business.