How a foreign company wins American customers without a US office, and the four things a US buyer checks first

A foreign company can win American customers without an office in the United States, and the barrier is not geography. It is four specific checks an American buyer runs before signing, usually without saying so. Can I pay you the way I normally pay suppliers. Who do I call when something breaks, and in which hours. What happens legally if this goes wrong. And is there anybody like me who has already bought from you. Satisfy those four and the absence of a US office stops mattering for most categories. Fail any one of them and a lower price will not rescue the deal.

The four checks, and what each costs to satisfy

The buyer's check	What satisfies it	Rough cost to you
Can I pay you normally?	Invoicing in US dollars, ACH or card accepted, a W-8 form ready, clear treatment of any withholding	Low. A payment processor and an accountant's half day
Who do I call?	Named support hours that overlap US business hours, a US phone number, and a named human	Moderate. A number is cheap, the staffed hours are not
What if it goes wrong?	Governing law and venue the buyer's counsel will accept, plus insurance evidence	Moderate. Legal review once, then reusable
Has anybody like me bought?	Two American references in the buyer's own sector, contactable	Low in money, high in sequencing. The first two American customers are the expensive ones

The two situations where a US entity really is required

• Public sector and some regulated procurement. Many American government and institutional buying processes require a domestic entity, a tax identification number, and registration before a bid is accepted. If that is your market, the entity is a cost of entry rather than a nice to have.
• Categories with licensing. Insurance, certain financial services, healthcare delivery and some construction trades are licensed at state level, and the licence attaches to an entity and often to a person. No amount of trust building substitutes for it.

Outside those two, the entity question is usually a tax and payments question rather than a sales one, and it should be answered by an accountant rather than by a growth plan.

The American rules that apply to you anyway

Selling into the United States from outside it does not take you outside American marketing law. Section 5 of the FTC Act reaches deceptive acts and practices affecting American commerce, the FTC Endorsement Guides govern testimonials and reviews, and the Commission's 2024 rule on consumer reviews and testimonials made fake and undisclosed insider reviews directly actionable. CAN-SPAM governs commercial email to American recipients and the Telephone Consumer Protection Act governs calls and texts, with statutory damages that make an untested outbound programme an expensive way to learn. State privacy laws, California's among them, create obligations that follow the data rather than the vendor. The practical version of all that is one named reviewer with American context who reads every claim, every testimonial and every outbound sequence before it ships. That role is cheap and it is the difference between a market entry and a retraction.

What American buyers are told when they ask, measured

On 22 October 2026 we put a 198 question American buyer bank to the ChatGPT and Gemini product surfaces through a data provider. The United States was named inside the text of each question, because the provider accepts gl, hl and location parameters and ignores all three, so the prompt is the only lock that holds. The brand batch is excluded from every figure as a ceiling measurement.

In 64 blind American readings the engines produced 2,866 citation URLs across 1,143 distinct hosts, named us zero times, named a supplier in 24 readings and named nobody in 38. All 53 namings went to software products, led by Semrush at 14, HubSpot at 12, Ahrefs at 9 and BrightLocal at 5. Zero American agencies were named and zero foreign suppliers were named either.

That last point is the useful one for a foreign seller. People often assume an assistant asked an American question will favour American suppliers. In our American pass the engines named no local firms at all, while the same bank run for Canada on the same day named six Canadian agencies 21 times. So locality preference is a property of what is published and cited in a market rather than a property of the engine, and in the United States the agency evidence was thin enough that the engines named software instead. A foreign supplier with better published evidence than the local incumbents is not at a structural disadvantage in that queue.

The order to do this in

• Fix payments first. An American buyer who cannot pay you the normal way does not become a customer no matter how good the pitch was.
• Publish the support hours and a US number, and staff the overlap honestly rather than aspirationally.
• Get the contract reviewed once for American buyers, then reuse it. Governing law and venue are the clauses procurement reads.
• Win two American references and make them contactable. Discount for them if you must; they are the asset that unlocks the rest.
• Appoint the American claim reviewer before the first campaign, not after the first complaint.

If part of the trust gap is whether an American buyer can verify your claims at all, the checks that make a claim verifiable are set out in what the phrase is worth and how to verify a claim. If you are entering the United States specifically on AI search visibility, the baseline to establish before you spend is in measuring from a United States baseline of zero.

Questions foreign sellers ask about the American market

Do I need a US entity to sell to American businesses?

For most private sector categories, no. For public sector and institutional procurement and for licensed categories, usually yes. Treat it as a tax, payments and licensing question and take advice rather than deciding it from a sales perspective.

Will an American buyer care that support is in another time zone?

They care about the overlap and about who answers. Publish the hours, staff them, and give a named person. Vague global coverage reads as no coverage.

Is a US phone number enough?

It removes a friction and it does not substitute for staffed hours. A number that rings into a voicemail during American business hours is worse than no number.

How do I get the first two American references?

Price the first two deals as reference deals, with the reference written into the agreement. It is the cheapest marketing expenditure available to a foreign entrant.

Do assistants favour American suppliers for American buyers?

Not on our evidence. In 64 American readings the engines named no local firm at all, and in the same bank run for Canada on the same day they named six local agencies 21 times. What differs is the published, citable evidence in each market, not the engine.

The queue where a foreign supplier is not at a disadvantage

Most of the American trust gap is about payment, support and contract. The assistant queue is different, because on our 22 October 2026 reading the engines named no American agency in 64 readings and named nobody at all in 38 of them, so the slot is open to whoever publishes the clearest, most checkable answer regardless of where they are registered. AI Knows Us reads ChatGPT, Gemini, Perplexity, Claude and Google AI Overviews for the buying questions in a category, reports each engine separately with its denominator and keeps the raw answer text. For an American market programme that is the Growth plan at 299 dollars a month, the cheapest tier reading all five engines, read on aiknowsus.com/pricing on 22 October 2026, and outside the United States and the United Kingdom the same plan is 199 dollars.