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Speech continued
Chairman Ben S. Bernanke
At the Bundesbank Lecture, Berlin,
Germany
September 11, 2007
Global Imbalances: Recent Developments and
Prospects
Are Current Account Imbalances a Problem?
This analysis of the sources of global imbalances does not address
the critical normative question: Are the current account
imbalances that we see today a problem? Not everyone would
agree that they are, for several reasons.
First, these external imbalances are to a significant extent a
market phenomenon and, in the case of the U.S. deficit, reflect the
attractiveness of both the U.S. economy overall and the depth,
liquidity, and legal safeguards associated with its capital
markets.
9 Of course, some foreign
governments have intervened in foreign exchange markets and
invested the proceeds in U.S. and other capital markets, which most
likely has led to greater imbalances than would otherwise
exist. But the supply of capital from foreign governments is
not as large as that from foreign private investors. From
1998 through 2001, even as the U.S. current account deficit widened
substantially, official capital flows into the United States were
quite small. During the years 2002 through 2006, net official
capital inflows picked up substantially but still corresponded to
less than half (47 percent) of the U.S. current account deficit
over the period. On a gross basis, during the same period,
private foreign inflows were three times official capital flows.
10 Moreover, even public
investors are motivated to some extent by the attractions of the
U.S. economy and U.S. capital markets.
Second, current account imbalances can help reduce tendencies
toward recession, on the one hand, or overheating and inflation, on
the other.
11 During the late 1990s,
for example, the developing Asian economies that had experienced
financial crises and consequent collapses in domestic investment
benefited from being able to run trade surpluses, which helped
strengthen aggregate demand and employment. During that same
period, the trade deficits run by the United States allowed
domestic demand to grow strongly without creating significant
inflationary pressures. Until a few years ago, the euro area
was growing slowly and thus also benefited from running trade
surpluses; more recently, as domestic demand in Europe has
recovered, the trade surplus has declined.
Third, although the U.S. current account deficit is certainly
not sustainable at its current level, U.S. liabilities to
foreigners are not, at this point, putting an exceptionally large
burden on the American economy. The net international
investment position (NIIP) of the United States, although at a
substantial negative 19 percent of GDP, is still smaller than the
negative NIIP of several other industrial economies. As a
fraction of net household wealth, which totaled almost $56 trillion
in 2006, the negative NIIP is even smaller--less than 5
percent. Moreover, the U.S. investment income balance, which
essentially represents the debt service on the NIIP, remains
positive, at least for now. Thus, even after years of current
account deficits and corresponding increases in net liabilities,
the United States continues to earn more on its foreign investments
than it pays on its foreign liabilities. And, as best we can
tell, the share of U.S. assets in foreign portfolios does not seem
excessive relative to the importance of the United States in the
global economy.
All that said, the current pattern of external imbalances--the
export of capital from the developing countries to the industrial
economies, particularly the United States--may prove
counterproductive over the longer term. I noted some reasons
for concern in my earlier speech, and they remain relevant
today.
First, the United States and other industrial economies face the
prospect of aging populations and of workforces that are growing
more slowly. These trends enhance the need to save (to
support future retirees) and may reduce incentives to invest
(because workforces eventually will shrink). If the United
States saved more, one likely outcome would be a reduction in the
U.S. current account deficit and in the rate at which the country
is adding to its liabilities to the rest of the world.
Second, the large U.S. current account deficit cannot persist
indefinitely because the ability of the United States to make debt
service payments and the willingness of foreigners to hold U.S.
assets in their portfolios are both limited. Adjustment must
eventually take place, and the process of adjustment will have both
real and financial consequences. For example, in the United
States, the growth of export-oriented sectors such as manufacturing
has been restrained by the shifts in relative prices and foreign
demand associated with the U.S. trade deficit. Ultimately,
the necessary reduction in the trade and current account deficits
will entail shifting resources out of sectors producing nontraded
goods and services to those producing tradables. The greater
the needed adjustment, the more potentially disruptive and costly
these shifts may be. Similarly, external adjustment for China
and other surplus countries will involve shifting resources out of
the export sector and into industries geared toward meeting
domestic consumption needs; that necessary shift, too, will likely
be less disruptive if it occurs earlier and thus less rapidly and
on a smaller scale.
On the financial side, if U.S. current account deficits were to
persist at near their current levels, foreign investors would
ultimately become satiated with dollar assets, and financing the
deficit at a reasonable cost would become difficult. Earlier
reduction of global imbalances would reduce the potential strains
associated with financing a large quantity of international
liabilities and likely allow a smoother adjustment in financial
markets.
Finally, in the longer term, the developing world should be the
recipient, not the provider, of financial capital. Because
developing countries tend to have high ratios of labor to capital
and to be away from the technological frontier, the potential
returns to investment in those countries is high. Thus,
capital flows toward those countries should benefit both them and
the countries providing the capital.
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