Power is the ability to control, to tell what to do, to get your way. Corporations have a lot of power over working people in our country now, and they might be about to get a lot more.
The proponents of the Trans-Pacific Partnership (TPP) tell us that it will have unprecedented "progressive" protections for the rights of working people, the environment, even wildlife. So there is likely to be flowery-sounding language in TPP, just as President Obama says.
What matters is whether there will be clear and guaranteed enforceability of those words.