Trump as a Global Economic Risk Factor: A Track-Record Analysis and Forward Scenarios

By Leo Jaeyoul Lim | CEO, SEJONG DnC
Market observer since the 1990s · August 15, 2026 · Global Macro · Geopolitics · 17 min read

Eighteen months into his second term, President Trump has become less a background variable in global markets and more the variable analysts build entire models around. This piece does something I think gets skipped too often in the daily-headline cycle: it lines up the actual record -- tariffs, the Federal Reserve, the fiscal trajectory, and geopolitical actions -- against what has actually happened to markets, and then asks, as carefully as the data allows, what the next 12-18 months are likely to look like. I've watched enough policy cycles since the 1990s to know that the more interesting question is rarely "is this good or bad," but "which mechanism is actually transmitting the risk, and to whom."

Three Numbers That Matter

• 50% -- the combined US tariff rate now applied to a wide range of Canadian goods under Section 338, the highest rate among major US trading partners (Source: CLA, Avalara, Aug 2026)
• $2.1 trillion -- the Congressional Budget Office's revised FY2026 federal deficit estimate, up from $1.9 trillion after tariff revenue came in below projection (Source: CBO via Fortune, Aug 2026)
• 40% -- the IMF's revised odds of a US recession this year, up from 25% as tariff-driven uncertainty weighed on growth forecasts (Source: IMF World Economic Outlook, via CBC)

All figures cross-verified against at least two independent sources; single-source figures are flagged inline where used.

1. The Tariff Record: From "Liberation Day" to a Supreme Court Reversal

The clearest throughline in Trump's second-term economic policy is tariffs, and the record is more legally contested than the headlines during any single month suggest. The administration's approach relied heavily on the International Emergency Economic Powers Act (IEEPA) -- a statute never previously used this way -- to impose sweeping, country-specific duties starting in February 2025 with 25% tariffs on Canada and Mexico and 10% on China. April's "Liberation Day" announcement extended reciprocal tariffs globally, in some cases up to 46%.

That legal foundation cracked on February 20, 2026, when the Supreme Court ruled 6-3 that IEEPA does not authorize the president to impose tariffs of this kind. Rather than unwind the tariff regime, the administration pivoted within hours to Section 122 of the Trade Act of 1974, imposing a temporary 10% global tariff, and has since layered on Section 301 and Section 338 authorities as the legal architecture for a tariff structure that, by July 2026, still reached most of the world's major economies.

Figure 1. 18 months of escalating and legally contested tariff actions. Source: Avalara, CLA, Tax Foundation, CRS, JP Morgan.

Table 1 -- Key Tariff Legal Milestones

Date	Action	Legal basis
Feb 2025	25% on Canada/Mexico, 10% on China	IEEPA (fentanyl/border emergency)
Apr 2025	Global reciprocal tariffs up to 46%	IEEPA
Feb 20, 2026	Supreme Court strikes down IEEPA tariffs (6-3)	Learning Resources, Inc. ruling
Feb 20, 2026	10% global tariff imposed same day	Section 122, Trade Act of 1974
Jul 24, 2026	10-12.5% tariffs by country; +50% on Canada	Section 301; Section 338

Source: Avalara, CLA, CRS (Aug 2026)

Once IEEPA fell, the administration's own statements suggested it would fight to keep the revenue already collected rather than issue refunds -- a detail worth noting for anyone modeling the fiscal side of this story, since a court-ordered refund obligation would be a meaningful, if one-time, fiscal shock layered onto an already widening deficit.

2. Who Actually Pays: The Household and Corporate Burden

The Tax Foundation's running estimate puts the 2026 household tax burden from these tariffs at roughly $900 per US household, down slightly from 2025's $1,000 estimate as some rates were negotiated lower -- but the burden has not disappeared, it has been redistributed across a more complex patchwork of country- and sector-specific rates. Pharmaceutical tariffs, according to J.P. Morgan's research desk, could rise toward 200% by late 2026 in currently exempt categories, while semiconductor-related duties have already reached the 100% range for some product lines before country-specific carve-outs are applied.

Figure 2. Effective tariff rates vary sharply by trading partner and are still moving. Source: Avalara, CLA, CRS, US-Korea trade agreement text.

Korea's case is instructive because it shows both sides of Trump's tariff diplomacy: escalation followed by a negotiated ceiling. Seoul's reciprocal tariff was cut to 15% under the November 2025 framework agreement, in exchange for a $350 billion US investment commitment and $100 billion in energy purchases -- but that framework has already been tested. In late January 2026, Trump briefly raised Korea's rate back to 25% over compliance disputes before it was restored, and in August 2026 a new Section 232 investigation extended tariffs into polysilicon and other chip-adjacent raw materials, with Korea again securing preferential treatment (a combined cap at 15%) that most other countries did not receive.

3. Federal Reserve Independence: The Institutional Story Under the Market Story

If tariffs are the headline-grabbing risk, the erosion of Federal Reserve independence is, in my view, the more structurally important one -- because central bank credibility, once damaged, is difficult and slow to rebuild, and the entire architecture of dollar-denominated global finance rests on the assumption that US monetary policy is set on economic rather than political grounds.

Figure 3. Twelve months of escalating pressure on Fed independence. Source: CNBC, PBS Frontline, NPR, Fortune, The Hill.

The sequence is by now well documented: repeated threats through 2025 to fire then-Chair Jerome Powell over his refusal to cut rates on the administration's preferred timeline; an attempt to remove Fed Governor Lisa Cook over disputed mortgage-fraud allegations, which the Supreme Court blocked; Powell's term concluding in May 2026 with Kevin Warsh installed as the new chair; and, in July 2026, a Department of Justice criminal probe into cost overruns on the Fed's headquarters renovation -- which Powell himself characterized, before departing, as retaliation for the Fed's refusal to cut rates on the administration's terms rather than a genuine ethics inquiry.

Powell's own farewell remarks, delivered at the John F. Kennedy Profile in Courage Award ceremony in late May 2026, are worth quoting for their institutional weight rather than their political charge: he warned that "if any administration finds a way to remove Fed officials over policy differences, then future administrations will do so as well," and that the resulting loss of public trust would be difficult to recover. Treasury Secretary Scott Bessent and a number of Republican senators, including Senate Banking Committee member John Kennedy, publicly pushed back on efforts to remove Powell by force -- a reminder that institutional pressure on the Fed has not been a uniformly partisan phenomenon.

Note on interpretation: Whether Chair Warsh's markedly shorter post-meeting statements and floated plan to reduce the FOMC's meeting cadence toward the statutory four-per-year floor represent a genuine "regime change" in Fed communication practice, or a temporary adjustment, remains contested among Fed watchers as of this writing; we treat this as an open structural question rather than a settled fact.

Table 2 -- Fed Independence Pressure Points and Institutional Responses

Pressure point	Institutional response
Repeated threats to fire Powell (2025)	Powell served out term; departed May 2026
Attempt to remove Gov. Lisa Cook	Supreme Court blocked the removal (2026)
DOJ probe into Fed HQ renovation	Powell called it retaliation for rate policy
Push to reshape Fed Board composition	Ongoing; Republican senators divided

Source: CNBC, Fortune, The Hill, NPR (2026)

4. The Fiscal Trajectory: Tariff Revenue Was Supposed to Help. It Hasn't, Enough.

One of the administration's core arguments for tariffs was that they would generate substantial new federal revenue, offsetting both the cost of tax cuts and the structural deficit. The actual FY2026 numbers complicate that narrative. The CBO's August 2026 Monthly Budget Review raised its full-year deficit estimate to $2.1 trillion, up $200 billion from its February forecast, explicitly citing the Supreme Court's tariff ruling and the resulting revenue shortfall. Bank of America's independent projection lands in a similar range: $7.5 trillion in spending against $5.6 trillion in revenue.

Figure 4. FY2026 fiscal snapshot: the deficit widened as tariff revenue fell short of projections. Source: CBO, Bank of America, Fortune.

Debt-service costs are the number I'd flag most for institutional readers: interest on the federal debt now runs close to $1 trillion annually, a figure that rivals the entire US defense budget and continues to grow as the Treasury refinances maturing debt at rates well above where it borrowed a decade ago. The 10-year Treasury yield closed at roughly 4.67% in late July 2026, near the 99th percentile of its past-year range even as the Fed has held its policy rate steady -- a divergence that itself reflects markets pricing in fiscal risk somewhat independently of monetary policy.

5. Markets Have Not Behaved the Way the Textbook Would Predict

Here is where I want to be careful not to overstate the case, because the market data genuinely cuts in more than one direction. The S&P 500 has continued climbing through most of this period -- up roughly 14% year-to-date through early August 2026, following a 17.9% total return in 2025 -- even as tariff uncertainty, Fed turmoil, and fiscal deterioration have all worsened by most objective measures. Corporate earnings have been the proximate explanation: S&P 500 second-quarter revenue rose nearly 15% year-over-year with earnings up more than 50%, more than double what analysts had initially forecast.

But "markets are fine" is an incomplete read of 2026. CFRA Research data shows the index has endured some of its fastest falls into correction territory since World War II during this period, even as it has also posted some of its fastest recoveries. The pattern looks less like sustained calm and more like a market that has become structurally more reactive to policy headlines in both directions -- a dynamic that raises tail risk even when the central tendency looks benign. One data point I'd treat with particular caution, because it is drawn from a single source and touches on a live conflict-of-interest question rather than settled fact: reporting has noted that President Trump's Q1 2026 financial disclosures show substantial personal holdings concentrated in crypto, AI, and defense -- the same three sectors that have been the most direct beneficiaries of administration policy. Readers should weigh that observation as exactly what it is: a disclosed data point inviting scrutiny, not a proven causal claim.

6. Geopolitical Risk-Taking Beyond Trade

The tariff and Fed stories do not exist in isolation from Trump's broader foreign-policy posture, which 2026 has made considerably more assertive. The administration's operation to remove Venezuelan President Nicolás Maduro in January 2026 -- confirmed by Trump himself, with a transitional government installed within days -- marked the most direct US military action toward regime change in the Western Hemisphere in a generation. Asset managers including Goldman Sachs and Wellington have characterized this as part of a broader reassertion of Monroe Doctrine-style primacy in the Western Hemisphere, occurring alongside renewed rhetoric about acquiring Greenland and an unresolved Russia-Ukraine war that continues to intersect with sanctions and European security planning.

For markets, the more immediate transmission channel has been energy: Brent crude has moved on Hormuz Strait tensions and Iran-related compensation disputes tied to the administration's negotiating posture, spiking nearly 7% across four sessions in early August alone. Analysts at the Stimson Center and elsewhere frame 2026's foreign policy environment as a broader shift away from a rules-based order toward great-power spheres of influence -- a framing that, whatever one makes of it normatively, has clear implications for how investors should think about geopolitical tail risk going forward: less predictable, more regionally concentrated, and more directly tied to a small number of individual decisions.

7. Market Outlook: Two Paths Forward

I want to resist the temptation to make a confident, single-scenario call here -- not as a hedge, but because the data genuinely supports two coherent and quite different paths, and an honest analyst should say so plainly.

Figure 5. Two plausible paths for markets over the next 12-18 months. Author's analysis, based on data as of August 2026.

The base case, and the more probable of the two given current data: tariffs and widening deficits act as a persistent drag on growth and a source of episodic volatility, but do not on their own trigger a sharp US recession, in part because AI infrastructure capital expenditure continues to provide an offsetting growth impulse large enough to mask -- though not eliminate -- the trade and fiscal headwinds. Under this path, dollar weakness and gold strength continue as structural rather than cyclical trends, and markets learn to price geopolitical and Fed-credibility risk as a persistent background variable rather than a series of discrete shocks.

The risk case worth taking seriously: a further erosion of Fed credibility -- whether through additional attempts to reshape the Board, or simply markets losing confidence that policy is being set on economic grounds -- revives inflation expectations and pushes long-end yields meaningfully higher, compounding an already strained fiscal position. Layer onto that a genuine (not just threatened) disruption in the Strait of Hormuz, continued tariff litigation uncertainty, and further sovereign credit-rating pressure, and the combination could produce a sharper repricing than the base case assumes. Neither path is a prediction; both are what the current data supports as plausible, and I'd encourage institutional readers to hold both in mind simultaneously rather than anchoring to one.

8. Basic Investment Principles

The following is deliberately general, consistent with the analytical, non-prescriptive approach this publication maintains. It is not a recommendation to buy, sell, or time any specific position.

• Treat US policy unpredictability -- across trade, monetary policy, and geopolitics -- as a standing risk factor to size into portfolio construction, not a temporary condition to wait out.
• Diversification across geographies and asset classes remains the most reliable tool available for managing a risk environment this broad and this fast-moving; concentrated bets on any single outcome carry asymmetric downside given how quickly the underlying facts have moved over the past 18 months.
• Distinguish between tariff-driven and Fed-credibility-driven inflation risk when assessing fixed-income exposure -- the two respond to different catalysts and different potential resolutions.
• Maintain a long time horizon and avoid overreacting to any single headline; this analysis exists precisely because individual data points, read in isolation, tend to overstate both the bull and bear cases.

Related Reading
For the origin of this publication's coverage of Trump's economic policy fractures, see Trump's Geopolitical Gamble and America's Structural Fractures: Why Markets Have Stopped Believing the President. For background on the administration's dollar policy and its implications for everyday investors, see Trump's Second-Term Economic Blueprint: What the "Weaker Dollar" Strategy Really Means for Everyday Investors.

9. Conclusion

Having watched several presidencies reshape markets since the 1990s, what strikes me most about this one is not any single policy -- tariffs, Fed pressure, and assertive geopolitics have all had precedents in one form or another -- but the simultaneity. Markets have generally proven able to absorb one major policy shock at a time. What 2026 is testing is whether they can keep absorbing three or four at once, indefinitely, without any of them individually crossing a threshold that forces a genuine repricing. So far, corporate earnings and AI capital spending have been strong enough to keep that question from being answered in the worst possible way. Whether that holds through 2027 is, honestly, the single most important open question in global macro right now -- and I don't think anyone, including the people setting the policy, currently knows the answer with confidence.

Investment Disclaimer
This article is published for informational and analytical purposes only. Nothing contained herein constitutes financial, investment, legal, or tax advice. All investment decisions involve risk, including the possible loss of principal. Past performance is not indicative of future results. Readers should conduct their own research and consult a qualified financial advisor before making any investment decisions. The views expressed are solely those of the author based on publicly available information and do not represent the official position of SEJONG DnC.

Sources

1. Avalara, "How 2026 tariffs will impact global trade," Jan-Aug 2026
2. CLA, "The Impact of Trump's Tariffs: A Comprehensive Analysis," Aug 2026
3. Tax Foundation, "Tracking the Impact of the Trump Tariffs & Trade War," Aug 2026
4. J.P. Morgan Global Research, "US Tariffs: What's the Impact?," Aug 2026
5. Congressional Research Service, "U.S. Tariff Actions and U.S.-South Korea Trade," Mar-Sep 2025/2026
6. CNBC, "Fed's Powell warns Trump's political 'stress test' will wreck public trust," Jun 1, 2026
7. PBS Frontline, "Inside Trump's Pressure Campaign on Powell and the Fed," May 2026
8. Fortune, "Trump allies double down on efforts to reshape Federal Reserve," Jul 4, 2026
9. The Hill, "Powell warns against political pressure on the Fed," Jun 1, 2026
10. NPR, "What to know about Trump's ugly feud with the Federal Reserve," Jan 13, 2026
11. Fortune, "Trump's $200 billion tariff hit swells budget deficit to $2.1 trillion," Aug 10, 2026
12. 24/7 Wall St. / Yahoo Finance, "Trump Called Himself the 'King of Debt,'" Jul 24, 2026
13. U.S. Bank, "Stock Market Under the Trump Administration," Aug 2026
14. The Motley Fool, "The Stock Market Sounds an Alarm... History Says the S&P 500 Will Do This in 2026," Jan 2, 2026
15. 24/7 Wall St., "The 'Don't Fight Trump' Trade Is Working," May 29, 2026
16. Goldman Sachs Asset Management, "Market Brief: Venezuela, Geopolitical Flashpoints and Investment Implications," Jan 12, 2026
17. Wellington Management, "Geopolitics in 2026: Risks and opportunities we're watching," Jan 5, 2026
18. Stimson Center, "Top Ten Global Risks for 2026," Feb 4, 2026
19. CBC, "IMF warns Trump's tariffs will slow U.S., global economies," 2026
20. Euronews, "Supreme Court blocks Trump tariffs in major blow to White House agenda," Feb 20, 2026

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