Maine’s two U.S. representatives have asked the federal government to review the rail infrastructure that transports oil through the state following an oil train derailment in Canada near Maine’s border that killed dozens. Reps. Mike Michaud and Chellie Pingree say in their letter dated Thursday that what happened in Canada “requires a full accounting of the vulnerabilities of existing rail infrastructure in Maine.” The letter was addressed to top officials at the National Transportation Safety Board and the Pipeline and Hazardous Materials Safety Administration. The Democrats say a review is especially important as crude oil shipments through Maine skyrocket. They say nearly 30,000 barrels a day crossed Maine via rail in March. They say a review would ensure the “safety and well being” of Maine residents who live near tracks.