Can currency moves, rather than fiscal consolidation, shrink trade imbalances?
Core argument: The U.S. overall trade deficit fell from around 3% of GDP to around 1% of GDP between 1987 and 1990, following the Plaza agreement and the dollar's move off its 1985 highs.
Trade adjusts to changes in exchange rates with a lag (usually thought to be 8 quarters but some work suggests that it might now be more like 12 quarters. The Plaza agreement didn’t bring the U.S. deficit down immediately, but by 1987 the real U.S. trade deficit was clearly shrinking. The overall trade deficit fell from around 3% of U.S. GDP to around 1% of U.S. GDP) between 1987 and 1990. This fall occurred even with strong demand growth in the US in 1988 and 1989, so it wasn’t just a function of underlying shifts in the global pattern of demand growth. Net exports contributed positively to U.S. growth once the dollar had clearly moved off its 1985 highs across the cycle. Japan’s surplus also fell from 4% of GDP to 2% of GDP—with a large reduction in its bilateral surplus with the U.S. This suggests that currency appreciation, not fiscal consolidation, was the primary driver of rebalancing in the 1980s.

