What to know about the Jones Act, a century-old shipping law Trump is waiving to dull Iran-war impacts

The administration announced a 60-day waiver of the 1920 Jones Act to allow foreign-built and -flagged ships to move goods between U.S. ports in order to blunt supply disruptions from the Iran war. Studies cited in the article show mixed effects: the Energy Policy Institute estimated the law raised consumer pump bills by $769 million in 2023, while an MIT study estimated elimination would have reduced East Coast gasoline, jet and diesel prices by $0.63, $0.80 and $0.82 (per the article) in 2018–19; however JPMorgan and other analysts say gains may not be lasting and legal text may limit waivers to a combined 45 days. Economists warn unchecked energy-price spikes could tilt the U.S. toward recession, leaving the policy’s net macro impact uncertain.

Analysis

Temporary regulatory relief for coastal shipping re-prices the marginal cost of moving barrels and refined products along the US coastline rather than changing underlying crude balances. The immediate transmission is via freight spreads and arbitrage windows: a $0.5–$2/bbl change in coastal freight translates to roughly $0.01–$0.05/gal at retail, but the material impact is concentrated in regional crack spreads (Lower Atlantic / PADD1) not nationwide pump prices.

Logistics and legal frictions will blunt and delay transmission. Foreign tonnage can only help to the extent ports, jetties and storage have spare throughput and insurers accept short-term voyages; expect the bulk of incremental flows to show up within 2–6 weeks, while charter markets experience both a short-lived spike in demand for transits and a follow-on softening as arbitrage voyages flush inventories.

Second-order winners are non-US tanker owners, freight brokers and Gulf export-oriented refiners that can arbitrage more easily into the Atlantic market; losers are US coastal-only fleets, shipbuilders and regional refiners with limited access to export parity. The scenario is binary: a clean legal path + port capacity unlocks meaningful regional margin compression; a legal reversal or port bottleneck leaves shipping rates and regional spreads near current levels — tradeable volatility over the next 30–90 days is the main alpha source.

Key Decisions for Investors

• Short PBF via a 1–2 month put spread (buy 10% OTM put / sell 25% OTM put) to capture a 10–25% downside if East Coast gasoline/ULSD cracks compress; max loss = premium, target 2.5x return if regional crack moves 10c+/gal.
• Long Scorpio Tankers (STNG) using a 1–3 month call spread (buy near-ATM call / sell 20–30% OTM call) to play higher short-haul voyage demand and repositioning premium; asymmetric payoff if charter rates spike for 4–6 weeks, cap premium outlay to target ~2:1 reward:risk.
• Long Gulf export-oriented refiners (e.g., VLO or PSX) with a 1–3 month bullish call position or buy-write to capture improved export arbitrage; thesis: wider export parity benefits these names versus PADD1 peers — target 15–25% upside with stop if Brent falls >12% in 30 days.
• Buy JPM 3-month protective puts (small size) as a macro tail hedge: if energy-driven recession risk materializes or legal backlash creates market-wide volatility, this limits balance-sheet/credit spread exposure; treat as insurance — cost should be <1% of allocation for asymmetric protection.