Global demand for dollars as the reserve currency forces the U.S. to run persistent trade deficits to supply them. This strengthens the dollar and boosts import power but hollows out the domestic industrial base. A future decline in dollar demand would create a painful economic transition.

China's massive trade surplus is driven less by its manufacturing strength and more by its failure to stimulate domestic consumption. Weak internal demand forces the economy to rely on exports, a stark contrast to its balanced trade position in 2018.

Because most global trade, including Chinese exports to the US, is priced in dollars, exchange rate fluctuations have a limited effect on US import prices. A dollar depreciation boosts US exports (as they become cheaper for foreigners) but doesn't significantly reduce imports, challenging traditional trade models.

North Asian economies, despite current account surpluses, exhibit balance-of-payments dynamics typical of deficit countries. This is caused by exporters holding dollars, domestic capital outflows, and foreigners hedging equity investments. This structural imbalance acts as a powerful headwind for regional currencies, overriding positive trade data.

China's large trade surplus is a symptom of internal economic weakness—primarily suppressed consumption and collapsing investment from its property market crisis. This challenges the narrative of unstoppable manufacturing prowess and suggests the surplus is not sustainable as trade partners react.

Contrary to economic fundamentals, East Asian currencies are weak. This paradox is driven by complex financial flows, including foreign investors hitting concentration limits in booming stock markets and pension fund outflows, which are currently overriding strong trade balances.

Contrary to standard economic models, where a country's currency appreciates as its exports become more competitive, China's trade-weighted exchange rate has remained low. This prevents Chinese workers from seeing their international purchasing power increase and is a major source of friction with trading partners.

While the U.S. has a monetary trade deficit, it receives a surplus of physical goods and services due to the dollar's strength. This concept, like getting a great haircut for a low price, illustrates a fundamental benefit of global trade that protectionist policies often overlook.

China's trade surplus exploded post-pandemic because its factory output rebounded quickly while domestic demand lagged due to the housing bust and other factors. This imbalance between production and consumption is a primary driver of current global trade friction.