“The TPP would only marginally improve free trade, but would export to other countries stronger copyright and patent standards, which would increase the costs these monopoly privilege systems impose on economies, reduce Internet and artistic freedom, increase the prices of pharmaceuticals, and reduce innovation. Another perverse aspect of the IP treaties is that any significant improvement to US copyright law, which is widely seen as being out of control and in need of reform, would arguably be in violation of US obligations under the Berne Convention. So Congress ties its own hands by means of international agreements and then uses this as an excuse later for why IP reform is not possible.”
http://fee.org/anythingpeaceful/detail/trans-pacific-partnership-is-about-control-not-free-trade