Paul Chiasson / The Canadian Press / AP File
This July 6, 2013, file photo shows smoke rising from railway cars carrying crude oil after derailing in downtown Lac Megantic, Quebec. A string of fiery train derailments across the country has triggered a high-stakes and behind-the-scenes campaign to shape how the government responds to calls for tighter safety rules. Billions of dollars are riding on how these rules are written, and lobbyists from the railroads, tank car manufacturers and the oil, ethanol and chemical industries have met more than a dozen times since mid-May 2014 with officials at the White House and the Pipeline and Hazardous Materials Safety Administration. Their universal message: Don’t make us pay for increased safety — that’s another industry’s problem.