Speaking at a general level, he sees the country as "a vibrant nation with a lot of potential,”he told attendees at at the Mexican Petroleum Congress held in the resort city.

Odum also emphasised that the global economy should take advantage of a growing stockpile of cleaner burning natural gas to wean industries and consumers off more-polluting fuels.

“There is so much available in North America that this continent could become a net exporter of energy in the coming decade,” he said.

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