A Section 301 exclusion request asks USTR to lift the additional duty on one specific product, and it is filed through the exclusions portal at exclusions.ustr.gov. Once posted, the request gets a 14-day public comment window, then a 7-day reply window, and USTR typically decides in 90 to 180 days. A granted exclusion lasts one year from the determination and covers every importer of that product, not just the company that asked.
One product, one request, and a file that has to stand on its own
Every exclusion request covers exactly one product. USTR does not accept a basket of related items under a single filing, so an importer with five affected SKUs files five requests, each with its own product description, its own HTSUS classification, and its own evidence. The description has to be precise enough that a customs officer at any port can tell whether a given shipment is inside the exclusion or outside it. A vague description gets the request denied, because USTR will not grant relief it cannot draw a border around.
The requester also has to supply annual quantity and value data for the product, which is the part most filers underestimate. USTR wants to know how much of the product enters the United States in a year and what it is worth, because the agency weighs the harm to the requester against the purpose of the tariff. A request with no numbers reads as a complaint. A request with a year's worth of import volumes, the duty paid on them, and the effect on the importer's prices reads as a case, and cases are what get granted.
Related reading on this site: LandedWatch and LandedWatch cover the neighbouring problems in more depth.
The 14-day comment window is where requests live or die
Once USTR posts a request, the clock starts. Responses from other parties are due 14 days after posting, and replies to those responses are due 7 days after the response period closes. That is the whole public phase, and it moves faster than most importers expect. A competitor who wants the tariff to stay can file against the request. A downstream buyer who needs the product can file in support. Silence from the trade is itself a signal, and USTR reads it that way.
The comments that matter are the ones with facts attached. A supplier stating that no domestic source can produce the product at the required specification carries weight. A trade association letter saying the tariff hurts the industry in general does not. Importers who track the portal and file a short, specific comment inside the 14 days get more out of the process than importers who hire counsel after the window closes and ask whether anything can still be done. The answer is usually no, because the reply window is for answering comments already filed, not for opening a new argument.
A granted exclusion covers everyone, and it lasts one year
The part importers most often miss is that an exclusion is not personal. When USTR grants one, it applies to the product, which means every importer bringing in that product gets the relief, including competitors who never filed anything and never commented. That changes the arithmetic of filing. A request costs time and money to prepare, and the benefit is shared with the whole market. Some importers file anyway because they need the relief and cannot wait for someone else to move first.
The relief is also time limited. A granted exclusion is effective for one year from the date of the determination, and then it expires unless a new request is filed. An importer who builds a pricing model on an exclusion without marking the expiry date will get a surprise at renewal, when the duty comes back and the margin disappears overnight. The right way to treat an exclusion is as a one-year bridge: use the year to reprice, to qualify an alternative source, or to file the next request early, because the second filing takes just as long as the first.
Frequently asked questions
How long does USTR take to decide a Section 301 exclusion request?
Review typically takes 90 to 180 days from filing, and the public comment phase is only the first part of that. Responses are due 14 days after the request is posted, replies 7 days after that, and then USTR reviews the record before issuing a determination.
Can I use an exclusion that another importer requested?
Yes. An exclusion applies to the product, not to the requester, so every importer of that product gets the relief once USTR grants it. That is why some importers file even though competitors will benefit too.
What happens if I miss the 14-day comment window?
The reply window that follows is for responding to comments already filed, so a company that never commented has little left to add. The practical fix is to watch the portal and file within the 14 days, or file your own request.
What data does an exclusion request need?
At minimum, a precise product description, the HTSUS classification, and annual quantity and value data for the product. USTR uses the volume and value figures to weigh the harm to the requester against the purpose of the tariff.