How Will Trump’s Changing Tariffs Be Monitored & Enforced?

What’s inside?
The Trump administration continues to quickly change and adapt its tariff program, with significant changes announced this month to its tariff policies targeting Chinese vessels docking at U.S. ports.
This marks another escalation in ongoing trade tensions, specifically designed to help the U.S.:
- Reduce reliance on Chinese-built ships
- Address vulnerabilities in its supply chain
- Stimulate demand for U.S.-built vessels
Let’s take a quick look at what has changed, what it means for global trade and the supply chain, and who will actually monitor and enforce these changes?
New Docking Charges for Chinese Vessels
The U.S. Trade Representative (USTR) introduced a new fee structure effective from mid-October 2025.
Chinese vessel owners and operators will now face a tariff starting at $50 per ton of cargo, with incremental annual increases, reaching $140 per ton by 2028. Non-Chinese operators using Chinese-built vessels face slightly lower fees: initially $18 per ton or $120 per container, escalating to $33 per ton or $250 per container over three years. Additionally, all vehicle carriers, regardless of origin, will be charged $150 per vehicle.
This policy includes exemptions aimed at minimizing disruption. Notably, vessels transporting bulk exports (coal or grains), ships servicing U.S. domestic routes or Caribbean islands, and operators ordering new U.S.-built vessels within three years are exempt from these fees.
Changes from Initial Proposals
The new fee structure represents a significant revision from initial proposals. Originally, fees of up to $1.5 million per port call were suggested, along with levies based on fleet size or future Chinese vessel orders. These initial proposals were scaled back to a per-voyage fee structure rather than per port call, addressing concerns about congestion at major U.S. ports.
Difficulties with Enforcement
Enforcement of these tariffs poses many practical challenges. Responsibility primarily falls on U.S. Customs and Border Protection (CBP) and the Maritime Administration (MARAD), which will oversee compliance at ports of entry.
These agencies will collaborate closely to monitor cargo manifests, vessel registrations, and payment of fees. But logistical complexities, documentation accuracy, and verifying exemptions – such as orders of U.S.-built ships – will add considerable administrative burdens and potential enforcement difficulties.
Global Trade and Supply Chain Impact
Already, these policy shifts have had noticeable impacts on global trade and supply chains:
Freight forwarders are facing higher operational costs and logistical complexity. They must increasingly rely on advanced technology solutions to optimize routing and mitigate cost impacts. AI-driven tools are crucial for route adjustments, predicting delays, and ensuring timely compliance with the sudden and frequent changes.
Government agencies, particularly in America,are now tasked with significantly greater oversight responsibilities. Agencies like MARAD and CBP are preparing to manage increased regulatory and documentation requirements, ensuring fee compliance, and facilitating smooth operations, despite potential congestion caused by regulatory checks.
Traders and shippers are confronting heightened uncertainty and increased costs. Tariff-induced expenses are expected to translate directly into higher consumer prices, intensifying inflationary pressures. Businesses must diversify supply chains away from Chinese dependency, a transition involving strategic inventory management, sourcing alternatives, and ongoing market trend monitoring.
Future Outlook
Looking ahead, the tariffs are of course expected to substantially reduce trade volumes between China and the U.S. Major ports, such as Los Angeles and Long Beach, anticipate at least a 20% decrease in containerized imports by late 2025, presenting significant logistical and economic challenges.
Retail shortages are expected to hit U.S. consumers in stages. The Guardian notes: “The bosses of Walmart and Target, two of the country’s largest retailers, have warned the president that his plans could disrupt supply chains, raise prices and lead to empty shelves.”
Ray Dalio, Co-Chief Investment Officer of the world’s largest hedge fund, believes an irreversible global process is now underway: “…many exporters to the United States and importers from other countries that trade with the U.S. are saying they have to greatly reduce their dealings with the United States, recognizing that whatever happens with tariffs, these problems won’t go away, and that radically reduced interdependencies with the U.S. is a reality that has to be planned for. Most obviously, American producers and investors in China, Chinese producers and investors in China that deal with Americans, American producers and investors in the United States that deal with Chinese, and Chinese producers and investors in United States that deal with Americans must now go about making alternative plans, regardless of what the next round of trade negotiations are like.”
Windward Can Help
Windward’s Maritime AI™ technology offers critical solutions to manage these evolving complexities. Our platform provides real-time analytics and predictive insights, empowering freight forwarders, traders, shippers, and government agencies to proactively navigate tariff impacts. Our solutions enable stakeholders to:
- Anticipate disruptions with predictive analytics
- Optimize maritime and logistical operations efficiently
- Ensure compliance through continuous monitoring and alerts
As the industry navigates this turbulent and unpredictable time period, Windward remains committed to providing the tools and insights necessary for informed, agile, and resilient responses.