This doesn't mean that the TPP can't have an impact. It will lock in a regulatory structure, the exact parameters of which are yet to be seen. We do know that the folks at the table came from places like General Electric and Monsanto, not the AFL-CIO and the Sierra Club. We also know that it will mean paying more for drugs and other patent and copyright protected material (forms of protection, whose negative impact is never included in growth projections), but we don't yet know how much.
We also know that the Obama administration gave up an opportunity to include currency rules. This means that the trade deficit is likely to persist long into the future. This deficit has been a persistent source of gap in demand, leading to millions of lost jobs. We filled this demand in the 1990s with the stock bubble and in the last decade with the housing bubble. It seems the latest plan from the Fed is that we simply won't fill the gap in this decade.