By funnelling all money through the Tides Foundation all organizations and movements that approach any of these sources can be directed to only one source the Tides Foundation and their "North American Tar Sands Coalition." The NATSC is headed by one Michael Marx.
The list of ENGO's that are funded by Michael Marx's NATSC is long, but to list merely the largest of the Canadian ones that have been with them from the beginning of the "invisible to the outside" coalition: The Pembina Institute, Environmental Defense Canada, ForestEthics, World Wildlife Fund (Canada), The Sierra Club of Canada (and associated regional chapters), Eco Justice and the Canadian BoreaL Intiative.
This would then eliminate Tides based anti-tar sands funding for all organizations in the NATSC. Certain groups such as Greenpeace, the Indigenous Environmental Network, Rainforest Action Network as well as several community initiatives have official positions to end tar sands development.