TOKYO — Donald Trump would make currency devaluation great again in a second term.

Surrogates for the former US President are telegraphing a strategy to weaken the dollar unilaterally to advantage exporters. As Politico reports, for example, Trumpworld is “actively debating” an Argentina-like pivot at the behest of advisors like Robert Lighthizer, Trump’s former international trade representative.

Instead of “America first,” such a detour might do more to advantage China in the longer run.

If devaluation were a strategy for prosperity, Buenos Aires would be running a Group of Seven economy. Turkey and Zimbabwe would be booming. Indonesia would be giving China a run for its money as Asia’s biggest economy.

The US trying this gambit would pour gasoline on inflationary pressures and risk the dollar’s status as a global reserve currency. That such a maneuver might coincide with Trump plans for a 60% tax on all Chinese goods and 100% tariffs on certain auto imports would shake the Federal Reserve’s monetary cosmology.

At the moment, of course, it’s the dollar’s relentless strength that’s turning heads. Asian currencies are either at, or falling below, key trading levels.

The Chinese yuan, South Korean won, Indian rupee, Indonesian rupiah and Malaysian ringgit all face downward pressure. In the West, authorities are paying attention to drops in the Israeli shekel, Polish zloty, South African rand and other monetary units.

Things will get much worse if Trump wins power again and devalues the dollar. Such a self-inflicted blunder would gift Xi Jinping one of his top-line goals in ways the Chinese leader could never have contemplated.

Since 2016, Team Xi has made steady and material progress toward supplanting the dollar as the linchpin of the global financial system.

That year, Beijing secured a spot in the International Monetary Fund’s “special drawing-rights” program, putting the yuan into the globe’s most exclusive currency club along with the dollar, euro, yen and pound.

In 2023, the yuan topped the yen as the currency with the fourth-largest share in international payments, according to financial messaging service SWIFT. It also overtook the dollar as China’s most used cross-border monetary unit, a first.

The strategy would get a major boost from Trump engineering a weaker dollar. That would greatly reduce trust in US Treasury securities, a cornerstone holding for central banks around the globe while boosting America’s borrowing costs.

Deliberate dollar devaluation would also imperil Washington’s current ability to defy financial gravity. Thanks to the dollar’s reserve currency status, the US enjoys any number of special benefits.

This “exorbitant privilege,” as 1960s French Finance Minister Valéry Giscard d’Estaing famously called it, allows Washington to live far beyond its means.

All this explains why the dollar continues to rise even as Washington’s national debt approaches US$35 trillion. The dollar is up 9.6% so far this year versus the yen and nearly 4% versus the euro.

Not that President Joe Biden’s White House hasn’t imperiled trust in the dollar. Along with continued debt accumulation, Team Biden’s decision to freeze portions of Russia’s currency reserves over its Ukraine invasion crossed a line with many global investors.

Economist Stephen Jen at Eurizon SLJ Asset Management notes that “exceptional actions” — including sanctions imposed by the US and its allies against Moscow — risk reducing the willingness of many nations to hold dollars.

Billionaire Ray Dalio, founder of Bridgewater Associates, agrees that the price of such tactics is that “there’s less of an eagerness to buy” US Treasury securities.

On Tuesday (April 16), the International Monetary Fund tossed unusually harsh shade at American policymakers over continued fiscal misadventures.

“The exceptional recent performance of the United States is certainly impressive and a major driver of global growth,” the IMF said. “But it reflects strong demand factors as well, including a fiscal stance that is out of line with long-term fiscal sustainability.”

The IMF hit Washington’s profligate tendencies, warning they risk exacerbating inflation and putting at risk the longer-term fiscal stability of the world’s biggest economy. “Something will have to give,” the IMF concluded.

On top of Covid-19 stimulus, the Biden era has rolled out massive investments in clean energy, infrastructure and other policy priorities. Interest costs are rising as debt held by the public is on track to hit $45.7 trillion, or 114% of gross domestic product (GDP) by 2033. That compares with 97% at the end of 2023.

These dynamics explain why “debt debasement” trades have been “closing in on all-time highs,” observes Michael Hartnett, investment strategist at Bank of America.

In January, “Black Swan” author Nassim Nicholas Taleb warned of “a debt spiral.” Around that same time, former US Treasury Secretary Robert Rubin told Bloomberg the American economy is “in a terrible place” in the context of growth-debt dynamics.

Yet that was back when markets expected the US Federal Reserve to ease as many as seven times this year. Inflation trends have left Fed Chairman Jerome Powell’s team on hold. In March, the consumer price index rose at a worse-than-forecast 3.5% annual rate.

Now, Iran’s attack on Israel – and the specter of retaliation – threatens to send crude oil prices above $100 per barrel at a time when OPEC is determined to continue cutting production.

Fresh tensions in the Middle East risk adding additional upward momentum to commodity prices.

“Since Russia’s invasion of Ukraine … the world has now moved into an inflationary boom,” says Louis Gave, economist at Gavekal Dragonomics. “And in this inflationary boom, holding US dollars and US treasuries would prove costly for investors in general, and dangerous for investors from undemocratic countries.”

Gave adds “sure enough, since the invasion of Ukraine, the gold price has risen by a quarter and long-dated US treasuries have fallen by a third. This is interesting because for years before the Ukraine invasion, the two asset classes basically marched in lockstep with each other. But in the last two years, gold has acted as a portfolio diversifier – along with energy – in a way that US Treasuries have failed to do. Will the events of the weekend [Iran’s bombing of Israel] change any of this?”

Enter Trump’s devaluation gambit. No doubt such an idea would get extreme pushback from US institutions, including the Treasury, Fed and the Department of State.

The first Trump administration considered engineering a weaker dollar to boost American exports. In July 2019, Larry Kudlow, then-director of the National Economic Council, told CNBC that “just in the past week, we had a meeting with the president and the economic principles and we have ruled out any currency intervention. The steady, reliable dollar is attracting money from all over the world.”

That same month, Trump lashed out at China and Europe for, in his view, playing a “big currency manipulation game” and “pumping money into their system” to undermine American workers.

Trump argued then that Washington should employ the same strategy “or continue being the dummies who sit back and watch as other countries continue to play their games.”

Yet the dollar slid at the time amid worries Trump might get his way. It was plausible, considering Lighthizer had Trump’s ear, along with advisor Peter Navarro, an economist advocating protectionist policies.

In July 2019, all this prompted then-US finance minister Steven Mnuchin to head to microphones to declare: “I am not going to advocate a weak dollar policy near term as the Treasury Secretary.”

Today, an argument can be made that a chronically overvalued dollar comes with costs.

Economist Mohamed El-Erian, president of Queens’ College, Cambridge, tells Bloomberg that “authorities are a little bit frozen around the world as to how do you react to a generalized dollar strengthening? How do you react to a generalized increase in interest rates in the US?”

El-Erian adds that “unfortunately in the past, when those two things go too far, they break something elsewhere.”

Trump might break far more by effectively pouring sugar in the dollar’s fuel tank. Any resulting surge in borrowing costs would vastly increase Washington’s debt-servicing burden and leave less money for vital services. And investments aimed at increasing innovation and productivity.