...Current TPP negotiation member states are the United States, Japan, Mexico, Canada, Australia, Malaysia, Chile, Singapore, Peru, Vietnam, New Zealand and Brunei. The TPP is the largest economic treaty in history, including countries that represent more than 40 per cent of the world´s GDP.

The Investment Chapter highlights the intent of the TPP negotiating parties, led by the United States, to increase the power of global corporations by creating a supra-national court, or tribunal, where foreign firms can "sue" states and obtain taxpayer compensation for "expected future profits". These investor-state dispute settlement (ISDS) tribunals are designed to overrule the national court systems.

ISDS tribunals introduce a mechanism by which multinational corporations can force governments to pay compensation if the tribunal states that a country's laws or policies affect the company's claimed future profits. In return, states hope that multinationals will invest more. Similar mechanisms have already been used. For example, US tobacco company Phillip Morris used one such tribunal to sue Australia (June 2011 – ongoing) for mandating plain packaging of tobacco products on public health grounds; and by the oil giant Chevron against Ecuador in an attempt to evade a multi-billion-dollar compensation ruling for polluting the environment. The threat of future lawsuits chilled environmental and other legislation in Canada after it was sued by pesticide companies in 2008/9. ISDS tribunals are often held in secret, have no appeal mechanism, do not subordinate themselves to human rights laws or the public interest, and have few means by which other affected parties can make representations.