Colombia ? John McCain hailed the economic benefits of free trade to Colombians on Wednesday, raising the possibility of an eventual hemispheric-wide agreement even though a weak economy at home has soured many U.S. voters on trade agreements.

The GOP presidential nominee-in-waiting also toured Colombia’s largest port by speedboat to review the country’s U.S.-backed drug interdiction programs, a day after he praised President Alvaro Uribe for Colombia’s anti-drug efforts but pressed him to improve the government’s record on human rights.

McCain was in the country when Colombia freed Ingrid Betancourt and three U.S. military contractors from leftist guerrillas, but he didn’t learn of the rescue until he was aboard a flight to Mexico. Uribe called McCain to inform him of the success.