The document discusses the history and role of the International Joint Commission (IJC) in protecting shared US-Canada waters. The IJC was established by the 1909 Boundary Waters Treaty to help prevent disputes over transboundary waters. It has played a key role in issues like regulating water levels and addressing pollution. The IJC also oversees the Great Lakes Water Quality Agreement and provides independent reports and recommendations to governments on shared water issues. Over its century of operation, the IJC has helped the US and Canada cooperatively manage their shared waters and resolve disputes through consensus-based decisions guided by science.