It's been used for 50 years to get trade agreements passed.
Do people have a reason to be fearful of Obama using it? Yes. But the real problem is the secrecy regarding TPP.
yes. Most of my concern is that we are giving this to the most lawless and destructive President we have seen in a very long time, if not ever in our history.
Also, I believe this is far more than any agreement before in history. I have little doubt Obama wants it so bad because he sees it as a way to hurt the US again.