The document discusses the Great Lakes Ballast Water Collaborative's winter meeting held in Toronto on January 19, 2011, addressing the complexities of ballast water regulation in the U.S. and Canada. It highlights the challenges posed by new federal and state requirements, uncertainties for commercial stakeholders, and the need for data-driven policymaking. The collaborative aims to foster relationships, provide a discussion forum, and share scientific information to improve understanding and management of ballast water issues.