I hadn't seen much relation of the Wisconsin protests with international trade, but here's an interesting point from the international economic law and policy blog.
The right to collective bargaining is one of the so-called "core labor rights" that the U.S. uses for GSP conditionality, and the 2002 TPA required labor rights to be a negotiating objective in U.S. PTAs. ... Article 6 of the US-Jordan FTA, for example, ... requires that each party "strive" to ensure that its laws incorporate freedom of association and the right to collective bargaining.Will this make us hypocrites? I guess not if you consider the fact that we probably already are, but it won't help.