A sugar industry economist said today at a hearing of the House Agriculture Committee that the apparent trend toward agricultural free trade is showing alarming signs of reversing itself.Jack Roney, director of economics and policy analysis for the American Sugar Alliance (ASA), said, "The multilateral Uruguay Round Agreement on Agriculture of 1995 and the more profound reforms of the 1996 Farm Bill in the United States seemed to presage a sea change: Governments removing themselves from the agricultural marketplace.