United States & the Strait of Hormuz.
The United States is the major economy least directly exposed to a Hormuz closure. Domestic shale production replaced most Middle Eastern light crude imports a decade ago; the residual exposure is medium-sour grades that Gulf Coast refineries are configured for, which substitute only at operational cost. The SPR — currently around 370 million barrels — was built against precisely this scenario, though recent drawdowns have left it well below its post-1990s peak. The dominant US exposure is indirect: a global price shock lands on American drivers through the world Brent benchmark, and the foreign-policy weight of allied Asian economies suddenly facing 88% (Japan) or 72% (Korea) Hormuz exposure becomes the operational problem. The Fifth Fleet's standing posture in Bahrain, plus IMSC and CTF-153 coalitions, is the US tool of first resort.
Strait status now
RESTRICTED
Crude imports via Hormuz
7%
Daily import value at risk
$44M
at $98.29/bbl Brent
Strategic reserve
370M bbl
in stockpile
Energy profile
- Oil consumption
- 19.8 mbpd
- Crude imports
- 6.4 mbpd
- Hormuz crude dependency
- 7%
- Reserve volume
- 370 mbbl
Top suppliers
- 01Canada— largest, ~60% of imports
- 02Mexico
- 03Saudi Arabia
- 04Iraq
- 05Colombia
Key facts
- Net petroleum exporter since 2020; gross imports remain large because of refinery slate mismatch.
- Direct Hormuz dependency is roughly 7% of imports, mostly Saudi and Iraqi heavy crudes for Gulf Coast refineries.
- Strategic Petroleum Reserve sits at ~370 million barrels — historically much higher; recent drawdowns have been politically contested.
- No LNG dependency on Hormuz; the US is now the world's largest LNG exporter.
- US Fifth Fleet, headquartered in Bahrain, is the principal force-projection asset over the strait.
Vulnerabilities
- A Hormuz closure is principally a price shock, not a volume shock — but the price shock is global and lands on US drivers anyway.
- Gulf Coast refineries configured for medium-sour crude depend on Middle East barrels; substitution is operationally costly.
- Allies' exposure (Japan, Korea, EU) becomes a US foreign-policy problem regardless of direct US imports.
- SPR drawdowns since 2022 have left the reserve at roughly half its post-1990s peak.
Mitigations
- Domestic shale production replaced most Middle East light crude imports a decade ago.
- The SPR remains the largest emergency reserve in the world by volume, even after recent drawdowns.
- US LNG export capacity provides global swing supply on the gas side.
- Fifth Fleet, IMSC, and Coalition Task Force 153 give the US a continuous coercive posture in the strait.
Historical context
The shale revolution decoupled the United States from the import-dependence model that defined the 1970s and 1980s. The SPR was built specifically against the Hormuz scenario; today its principal role is more about price stabilisation and signalling than volume substitution.