There is the International Joint Commission, and that has a particular focus on that geography. It brings together academia from both sides of the border. It brings together officials and experts, and it's the principal way to stimulate cooperation and develop site-specific work plans so there is cooperation between the U.S. EPA and the governments of Canada--Environment Canada, Health Canada, local, provincial, and state governments, etc. The International Joint Commission is the group that focuses on that area.
On June 12th, 2006. See this statement in context.