The original TPP contained measures to lower both non-tariff and tariff barriers to trade, and establish an investor-state dispute settlement (ISDS) mechanism. The U.S. International Trade Commission, the Peterson Institute for International Economics, the World Bank and the Office of the Chief Economist at Global Affairs Canada found the final agreement would, if ratified, lead to net positive economic outcomes for all signatories, while an analysis using an alternative methodology by two Tufts University economists found the agreement would adversely affect the signatories. Many observers have argued the trade deal would have served a geopolitical purpose, namely to reduce the signatories' dependence on Chinese trade and bring the signatories closer to the United States.