Tariff Threats vs. Reality: Why Importers Should Wait for the Federal Register

Until a tariff appears in the Federal Register, it is not legally in effect — no matter what a letter, social media post, or news headline says. As of the date of this post (July 21, 2025), a number of threatened tariff increases are circulating in the news and on Truth Social, but none had been published as final guidance, which means they are still noise, not law.

Key takeaways

A tariff is only real when it appears in the Federal Register as a signed proclamation or executive order — not before.
Announced tariffs frequently get delayed, reduced, or turned into negotiated deals before taking effect.
Withholding shipments while waiting for “certainty” usually costs more than just paying the tariff.
Country-specific details (Canada, Mexico, Brazil, Vietnam, China) are still unresolved as of July 21, 2025.
Transshipment misdeclaration carries severe civil and criminal penalties — never a workaround.

Why the Federal Register is the only source that matters

In today’s trade environment, tariff announcements travel fast — through presidential social media posts, leaked letters to foreign governments, and media reports. The problem is that these sources are not law. They reflect intent, negotiating posture, or trial balloons. CBP collects duties based on published proclamations and executive orders, not statements of intent. Until a measure clears the Federal Register, importers have no legal obligation under it — and acting as if they do can be costly.

The pattern has repeated throughout 2025: an announcement creates urgency, importers scramble, and then a deal gets struck or the effective date gets pushed. This doesn’t mean every announced tariff evaporates — many do become final. It means the right time to act is when the rule is published, not when it is threatened. You can track proposed and final tariff actions in real time at the full reciprocal tariff rate list by country, which we update as changes are published.

What was actually being threatened as of July 21, 2025?

Several threatened actions were in circulation as of the date of this email. None had final guidance published at that time.

Canada and Mexico

Reported figures of 30–35% tariffs were circulating, but a key unresolved question was whether any new rate would be a separate tariff layered on top of the existing IEEPA fentanyl tariff (which currently exempts USMCA-qualifying goods) or a replacement that brings non-USMCA goods up from 25% to 35%. That distinction matters enormously for USMCA-compliant importers. Until the Federal Register says otherwise, the existing rates apply.

Brazil

The proposed Brazil tariff was notable because it was framed as a response to public policy disagreements — not a trade imbalance. That framing is unusual and may have legal significance. A July 31, 2025, oral argument was expected to address whether the president has statutory authority under IEEPA to impose tariffs of this magnitude — an outcome worth watching for all importers relying on IEEPA-based tariff structures.

Vietnam

A deal with Vietnam was reported but not yet in writing as of July 21, 2025. One point of confusion worth clarifying: in shipping, “transshipment” means a vessel calling at a port en route to the US — that is legal. In customs law, “transshipment” means misdeclaring the country of origin to avoid duties — that is a federal offense. Civil penalties can reach four times the duties evaded, and criminal charges are also possible. Never use transshipment as a cost-saving strategy.

China

As of July 21, 2025, China’s tariff structure consisted of 20% IEEPA fentanyl tariff and 10% universal reciprocal, totaling 30% on top of any applicable Section 301 duties. The fentanyl portion is tied to China’s enforcement of oversight on drug exports to the US — making it partly a diplomatic instrument rather than a pure trade measure. For the full picture on how these layers interact, see our post on managing reciprocal tariff deadlines.

What should importers actually do?

The most common mistake I see is importers freezing shipments to “wait and see.” The math rarely works in their favor. Your supply chain loses more value from stockouts and production gaps than from paying a tariff that may or may not increase. The businesses that fare best in volatile tariff environments are the ones that keep moving inventory while monitoring the Federal Register for actual rule changes — not the ones that halt operations based on a tweet.

That said, some high-value, high-tariff-rate situations do warrant scenario modeling and hedging. If your effective duty rate could jump dramatically, a conversation with your customs broker about classification, valuation, and bonding strategy is worthwhile. See our guide to navigating the China shipping dilemma for a practical framework.

Frequently asked questions

How do I know when a tariff is officially in effect?

Check the Federal Register (federalregister.gov) for signed proclamations or executive orders. CBP also publishes CSMS (Cargo Systems Messaging Service) notices when new tariff measures take effect. Your customs broker should alert you to changes that affect your commodity.

Should I rush shipments before an announced tariff deadline?

Usually not. Many announced tariffs are delayed or modified before taking effect, and rushing shipments incurs real costs — premium freight, warehouse congestion, and cash flow impact. Model the actual tariff cost versus the cost of expedited shipping before deciding.

What is the difference between IEEPA and reciprocal tariffs?

IEEPA tariffs are imposed under the International Emergency Economic Powers Act and are tied to specific policy rationales (such as fentanyl enforcement). Reciprocal tariffs are the administration’s response to perceived trade imbalances. They are separate legal instruments and can stack with each other and with Section 232 duties, depending on the country and product.

Is transshipment through Vietnam or another country a way to avoid tariffs?

No. Misrepresenting the country of origin to avoid duties is a federal offense. Penalties include civil fines of up to four times the duties evaded and potential criminal prosecution. CBP actively investigates origin fraud, particularly from countries with high-tariff goods routed through lower-tariff third countries.

What if a tariff goes into effect without an in-transit exemption?

If a proclamation does not include an in-transit clause, goods already at sea when the tariff takes effect may still be subject to the new rate upon arrival. This is one scenario where monitoring the Federal Register before goods ship — not after — is genuinely valuable.