Folks Who Believe in Secular Stagnation Don't Think the Trade Deficit Is Determined by the National Savings-Investment Balance

It is common for economists to assert that the trade deficit is equal to the gap between national savings and national investment. If the United States invests more than it saves (combining private savings and government savings) then it is running a trade deficit. This is true by definition.

Intro Econ fans may remember that we have the basic accounting identity saying that output is equal to income:

C+I+G+(X-M)=Y

...where C is consumption,

...I is investment,

...G is government spending,

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