The biggest change in global fuel regulations since leaded gas went away could cause price shocks

The Trump administration is pushing to ease the rollout of new international rules to power commercial ships with environmentally cleaner fuels, fearing the measures will drive up costs for consumers and businesses.

The rules, set roughly a decade ago through the International Maritime Organization, an arm of the United Nations, take effect on Jan. 1, 2020, and aim to slash the amount of sulfur in marine fuel for oceangoing ships.

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