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
EFFECTIVELY CLOSED
Crude imports via Hormuz
7%
Daily import value at risk
$40M
at $88.33/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.