VANCOUVER – Four British Columbia Indigenous groups are set to argue in the Federal Court of Appeal that the Canadian government failed to consult adequately with them before its latest approval of the Trans Mountain pipeline expansion. A three-day hearing is scheduled to begin today in Vancouver to consider legal challenges launched by the Tsleil-Waututh Nation, Squamish Nation, Coldwater **>Indian Band<** and a coalition of small First Nations in the Fraser Valley. Several First Nations, environmental groups and the City of Vancouver had originally filed challenges making a range of arguments including that the project threatens southern resident killer whales off B.C.’s coast. The court only allowed six First Nations to proceed and called for an expedited hearing focused on the federal government’s consultation with Indigenous communities between August 2018…