David Holt: Earlier this year, during a five-month timespan, gasoline imports in California increased more than 10 times above their typical level, the U.S. Energy Information Administration said. The reason, officials said, was the Feb. 18 explosion at a refinery in Torrance, Calif. The facility, a vital source of gasoline and distillate fuels, has the capacity to refine more than 150,000 barrels of gasoline per day and supply 10 percent of California’s gasoline supply. The refinery’s reduced capacity triggered supply shortfalls that sent regional wholesale and retail prices soaring to make up for the cost of importing more gasoline from nations like India, Russia, and the United Kingdom, the EIA says. Import quantities ranged from 28,000 to 68,000 barrels per day. And that’s with the Trans-Alaska Pipeline System (TAPS), a major energy artery for the lower 48 states, in operation. Imagine how much worse would it have been had the pipeline been offline. That worst-case scenario, on...