INTERNATIONAL TRADE

Free Trade Talks to Resume: Negotiators striving to create a North American free trade zone will resume efforts today to wrap up the remaining difficult issues. Trade ministers and chief negotiators from the United States, Mexico and Canada remained in Washington, D.C., grappling with details of the wide-ranging negotiations to eliminate most tariffs and trade barriers and to liberalize investment opportunities and trade in services. Unsettled issues include determining the domestic content requirement for cars to receive duty-free treatment, tariff reductions, establishing a system to settle disputes among the three trade partners, and some intellectual property issues, U.S. officials said.