The Jones Act and the Cost of Shipping Between U.S. Ports (UPDATED)

Key Takeaways

• Jones Act forces US-flagged, US-built ships for domestic routes
• Waivers used during disasters, but savings modest for fuel prices
• Compliance adds $200M-$300M annually to US shipping costs
• US shipbuilding costs 4-5× higher than Asian alternatives
• Fleet shrank to 93 vessels, limiting competition and capacity

Pulse Analysis

The Jones Act, formally the Merchant Marine Act of 1920, is a classic cabotage statute that obliges any cargo moving between U.S. ports to travel on vessels that fly the American flag, are constructed in U.S. shipyards, and are owned by U.S. citizens. While most nations maintain some form of domestic‑shipping restriction, the United States enforces one of the strictest regimes, originally intended to preserve a wartime‑ready merchant fleet. Over a century later, the law functions more as a protectionist measure for domestic shipbuilders and seafarers than as a strategic defense tool.

Empirical studies reveal the financial toll of this policy. The Federal Reserve Bank of New York calculated that shipping a twenty‑foot container from the mainland to Puerto Rico costs $3,063, compared with $1,503 to the Dominican Republic, a disparity driven largely by the Jones Act’s compliance requirements. The World Economic Forum estimates the nation incurs $200 million to $300 million in extra freight costs each year, while a GAO report placed Alaska’s additional shipping burden at $163 million annually. Even if the act were repealed, research by Kellogg and Sweeney suggests East‑Coast gasoline would fall by only $0.015 per gallon, a modest consumer gain.

These numbers fuel a growing policy debate. U.S. shipyards now charge $330 million for a large container vessel, roughly four to five times the price of an equivalent Asian‑built ship, making domestic construction economically unattractive and shrinking the qualified fleet from 181 vessels in 2000 to just 93 by 2019. Proponents argue the act safeguards national security and high‑skill jobs, yet frequent disaster‑related waivers expose its rigidity. Lawmakers and industry leaders are weighing targeted reforms—such as easing the U.S.-built requirement or expanding exemptions—to balance maritime sovereignty with competitive shipping costs.