The Globe and Mail reports in its Saturday, Aug. 9, edition that the toughest part of Kinder Morgan's proposed Trans Mountain pipeline comes in the final five-kilometre stretch through Burnaby, B.C., where it faces a constitutional challenge to its plans. The Globe's Justin Giovannetti writes that in a brief filed last week with the National Energy Board, a lawyer for the City of Burnaby questions whether the NEB has the constitutional authority to override municipal bylaws that could prohibit Enbridge's pipeline rival Kinder Morgan from commencing activities in a conservation area. Two months ago Mayor Derek Corrigan vowed to stop the pipeline project. Kinder wants the $5.4-billion pipeline to pass through Burnaby Mountain. Gregory McDade, the city's lawyer, said the challenge is about more than Burnaby's "opposition to the pipeline," but about whether the federal agency can allow a company to ignore municipal rules before a project is even approved. The bylaws established the park that includes Burnaby Mountain and gave the municipality authority over it. Burnaby has said it remains open to working with Kinder if it files an application to work within the city's bylaws.