The Biden administration temporarily eased century-old US shipping requirements so a single foreign tanker could transport gasoline and jet fuel to the East Coast, where the Colonial Pipeline outage caused tanks to run dry. A White House official said Thursday that the exemption applied to one tanker but other waiver requests are under consideration. The move is designed to address fuel shortages spurred by the cyberattack on the Colonial Pipeline, which shut down a major artery for gasoline, diesel and jet fuel across the US East Coast. Even with fuel shipments resuming from around 5 pm New York time Wednesday, it’s unclear how long it will take for the network to return to normal.