What works in Canada may work in U.S. By: MarketWatch August 20, 2009 at 00:01 AM EDT A top-performing Canadian investment letter started a U.S. clone that seems to be working its magic south of the border. Read More >> Related Stocks: Apache Corp Briggs & Stratton Corp Broadridge Financial Solutions Llc CAE McDonald's Corp Wal-Mart Stores, Inc.