Comment by cherryteastain

Putting aside the lack of evidence that tariffs meaningfully reduced the US trade deficit as other posts here remarked, reduction of the deficit would be catastrophic for the USD based global financial system anyway so it's bad for the US and bad for the world.

Dollars can only be created in the US by the Federal Reserve or US banks. Since the USD is the currency in which most global trade is conducted, the US MUST provide USD liquidity to the rest of the world that they can exchange between one another and the US (cf. Triffin Dilemma). If the rest of the world has no dollars, e.g. an Indonesian company cannot sell goods to an Ecuadorian company settled in USD.

The benefits of this system to the US are enormous (cf. Exorbitant Privilege) since US can print dollars out of thin air and 'give away' these bytes in a database and receive real goods in exchange. Real goods that people spent energy and expended labor for, in exchange for bytes in a DB.

If the US stopped supplying dollars to the rest of the world, it'd first spark a massive financial crisis as companies that owe USD to one another default in a chain reaction. Afterwards, an alternate to the USD would emerge as 'hard money that everyone accepts'. Candidates for this currently are limited in the space of fiat, Europe and China are net exporters so they cannot supply EUR/CNY to the rest of the world in net just like a US with trade surpluses cannot. Possibly there could be a return to precious metal backed currencies. But in any case, in such an environment, US could no longer receive goods 'for free' in exchange for bytes in a database and its life standards would greatly suffer.