A show of unity Ecuador's Rodrigo Borja, left, Chile's Patricio Aylwin, Colombia's Cesar Gaviria, Argentina's Carlos Menem, Mexico's Carlos Salinas, Brazil's Fernando Collor de Mello, Uruguay's Luis Lacalle and Venezuela's Carlos Andres Perez display their unity in Caracas, Venezuela. In two days of meetings, the eight presidents appeared receptive to U.S. calls for a free trade zone.