Trafigura Group and Phillips 66 are the leading recipients of US government waivers allowing the use of foreign-flagged tankers to ship oil, fuel and other cargoes between domestic ports.

Commodity traders, refiners and other companies have hauled almost 50 cargoes of gasoline, diesel, jet fuel and other products from ports along the Gulf Coast and elsewhere to destinations as far away as California and Alaska since the waivers were announced to ease the war-driven price crunch, data from the US Maritime Administration shows.