While trade negotiations have long involved some level of secrecy, the Trans-Pacific Partnership (TPP), a proposed regional free trade agreement between the United States and Asia-Pacific partner countries, involves unprecedented levels of work being done behind closed doors. This agreement could curtail crucial activities of state and local governments and would cover profoundly important public policy issues – access to essential medicines, food security, and natural resource management – that deserve extensive public review and discussion. However, intense efforts are being made to block the public from knowing even the most basic content of the agreement.