The Globe and Mail reports in its Wednesday edition that over two decades ago, the Canadian Transportation Agency created a formula to regulate grain movement across Western Canada, intended to last five years. The Globe's Kate Helmore writes that it remains in place today, facing calls for elimination and widespread criticism from those involved in grain transport. Agricultural economists, shippers and farmers argue that the maximum revenue entitlement (MRE) policy enriches railroads without benefiting their customers with efficiency gains. North America's most expansive railway -- Canadian Pacific Kansas City -- also has issues with the MRE but for different reasons. The formula does not reinforce its market power, CPKC argues, and by capping profits, it discourages investment. After decades of debate, change may be coming with the MRE intersecting two key promises from Ottawa. Last week, Prime Minister Mark Carney pledged to improve the flow of goods across Canada by investing in port infrastructure, including the Port of Churchill, which is not served by the MRE. Additionally, Ottawa aims to reduce red tape and streamline regulations in food production to support Canadian farmers facing tough trading conditions.