President Joe Biden said that as the Colonial Pipeline is returning back online following a ransomware attack last week, Americans should not panic-buy and hoard fuel, but he cautioned that shortages might continue in the near future. “Fuel is beginning to flow to a majority of the markets that they service and they should be reaching full operational capacity as we speak,” he said at the White House Thursday but cautioned that “we will not feel the effects at the pump immediately.” “This is not like flicking on a light switch,” Biden said. “I know seeing lines at the pumps or gas stations with no gas can be extremely stressful,” he added, “but this is a temporary situation.” He warned that gas station operators should not engage in price-gouging amid fuel shortages and said state and local governments would crack down should it happen. The operator of the 5,500-mile Colonial Pipeline …