Here is one, http://www.iww.org/ of many international workers’ unions vying for global trade agreement status. To do your reasearch I charge $300.00/hr.
None of us yet know what Obama will negotiate in his trade agreements. But I would bet, it won’t be “free.” It is going to be left like everything he does in the US. He is going to “level the playing field” in the cost of workers labor.
Do you have any idea how many aluminum cans he'll need to find to pay that?