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July 6, 2016


TPP: Estimates of Economic Effects


The Trans-Pacific Partnership (TPP) is a proposed free
trade agreement (FTA) among the United States and 11
Asia-Pacific countries that would reduce and eliminate
tariff and nontariff barriers on goods, services, and
agriculture, establish trade rules and disciplines that expand
on commitments at the World Trade Organization (WTO),
and address new 2 1st century issues, such as digital trade
and state-owned enterprises. It has both economic and
foreign policy implications for the United States, and raises
potential strategic issues regarding U.S. trade policy and
broader U.S. engagement in the Asia-Pacific region.
The TPP is termed by its participants a comprehensive and
high-standard agreement. In considering the TPP, Congress
likely will examine various economic studies to assess the
impact of the agreement on the economy. The results of
these studies vary depending on the model and the
assumptions that are used to generate the results. The U.S.
International Trade Commission (ITC) is tasked with
providing the official U.S. Government estimate of the
economic effects of the agreement.
By eliminating and lowering tariffs, the TPP is expected to
impact the external market conditions under which TPP
nations trade and lower the prices of traded goods among
the parties. In turn, lower prices can affect trade patterns by
increasing the amount of trade that occurs (trade creation)
and by shifting trade toward countries that are party to the
agreement (trade diversion). As a result, the TPP may alter
the level of trade among the participants and the mix of
goods and services that are traded. Estimating the
employment effects from a trade agreement, however, is
challenging due to the difficulties involved in disentangling
the effects of trade and trade agreements from other factors
that affect the U.S. economy, among other things.


Most economists argue that liberalized trade and investment
create both economic costs and benefits, but that the long-
run net effect on the economy as a whole is positive. They
contend that: (1) the economy operates more efficiently due
to increased competition through international trade; (2)
consumers benefit by having a wider variety of goods and
services at varying levels of quality and price than would be
possible without international trade; and (3) trade may have
a long-term positive dynamic effect on production and
employment. In addition, trade agreements could have
significant economic effects on trade and commercial
relations over the long run, particularly for developing and
emerging economies.
Economists recognize that some workers and producers in
the economy may experience a disproportionate share of the
short-term adjustment costs that are associated with shifts in
resources stemming from greater international competition.


Although the attendant adjustment costs for businesses and
labor are difficult to measure, some estimates indicate that
they potentially are significant over the short-run and can
entail dislocations for some segments of the labor force, for
some companies, and for some communities.
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Economists and others use various economic models and
approaches to estimate the magnitude of changes in U.S.
economic activity and employment associated with a trade
agreement. Both proponents and opponents of trade
agreements cite results of these studies to support their
respective positions. These models, however, differ in the
estimates they produce, reflecting different assumptions and
differences in the structures of the models themselves.
While all the various models and approaches have strengths
and weaknesses, although not always in equal proportion,
they vary in the degree to which they reflect economic
reality, and they are highly sensitive to the assumptions that
are used.



The ITC provides the official U.S. Government estimate of
the impact of proposed trade agreements on the U.S.
economy. The ITC uses an economic model known as the
Global Trade Atlas Project (GTAP), located at Purdue
University, to estimate changes in trade (exports and
imports) that arise from changes in tariff rates and tariff rate
quotas. This model is a long-run microeconomic model that
has been widely used and tested. Such trade models are
limited in how accurately they can reflect certain aspects of
complex FTAs and require a number of assumptions.
In May 2016, the ITC released a comprehensive assessment
of the economic impact of the TPP. In developing its
estimates, the ITC made assumptions about the evolution of
the world economy without the TPP in five-year steps to
2047, and it incorporated projections from various sources
about labor availability, growth rates for population, and
gross domestic product (GDP). The model also includes
potential trade policy changes that would be expected to
occur in the absence of TPP. The ITC modified the standard
GTAP model to include the 12 TPP countries, various
regions, and 56 industry sectors. Similar to previous studies
of FTAs, the ITC analysis of the TPP estimated the effects
of liberalizing tariffs and certain nontariff barriers (NTBs)
and assumed that nations will take full advantage of
increases in agricultural tariff rate quotas.

The ITC estimated that by 2032, U.S. annual real income
would be $57.3 billion (0.23%) higher than the baseline
projections, real GDP would be $42.7 billion (0.15 %)


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