By Senator Elizabeth Warren

The United States is in the final stages of negotiating the Trans-Pacific Partnership (TPP), a massive free-trade agreement with Mexico, Canada, Japan, Singapore and seven other countries. Who will benefit from the TPP? American workers? Consumers? Small businesses? Taxpayers? Or the biggest multinational corporations in the world?

One strong hint is buried in the fine print of the closely guarded draft. The provision, an increasingly common feature of trade agreements, is called “Investor-State Dispute Settlement,” or ISDS. The name may sound mild, but don’t be fooled. Agreeing to ISDS in this enormous new treaty would tilt the playing field in the United States further in favor of big multinational corporations. Worse, it would undermine U.S. sovereignty.

ISDS would allow foreign companies to challenge U.S. laws — and potentially to pick up huge payouts from taxpayers — without ever stepping foot in a U.S. court. Here’s how it would work. Imagine that the United States bans a toxic chemical that is often added to gasoline because of its health and environmental consequences. If a foreign company that makes the toxic chemical opposes the law, it would normally have to challenge it in a U.S. court. But with ISDS, the company could skip the U.S. courts and go before an international panel of arbitrators. If the company won, the ruling couldn’t be challenged in U.S. courts, and the arbitration panel could require American taxpayers to cough up millions — and even billions — of dollars in damages.

If that seems shocking, buckle your seat belt.

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