[rwmj]

Nothing in ISDS stops the state from leaving the treaty and nationalizing anything it wants. The state and people are still supreme. What they can't do is join a free trade treaty, "trick" companies into investing, and then expropriate assets while still enjoying the benefits of free trade.

The problem with TPP is the ISDS goes far beyond these simple goals (the treaty has been "commandeered by corporations", if you like).

But for simple, limited protection of assets in foreign countries, it's a good thing, encouraging inward investment.