A federal court last week granted class certification to a group of direct purchasers of rail freight who are seeking damages for what they say was a price-fixing conspiracy by the four largest U.S. railroads—Union Pacific, BNSF, CSX and Norfolk Southern. The National Industrial Transportation League said the order from Judge Paul L. Friedman of the U.S. District Court for the District of Columbia “is a major decision that may have a profound impact on rail shippers.” &nb...