Court, hospital and naturalization interpreting across the US in White Hmong or Green Mong, plus certified translation of the refugee-era records Hmong families actually hold.
Prism Linguistics provides Hmong interpreters for court hearings, medical appointments, naturalization and green card interviews and depositions anywhere in the United States, in person, by phone or by video, in White Hmong or Green Mong, and certified English translation of refugee documents, camp records and affidavits for USCIS.
Last reviewed September 2, 2026 by Sarah J, Prism Linguistics
Hmong is the language of one of the largest refugee communities the United States has ever resettled, and fifty years on the need has moved from the resettlement office to the courtroom, the clinic and the naturalization interview. The people who need a Hmong interpreter today are the parents and grandparents who came out of the camps, and the dialect they speak is the first thing we ask. Prism's office is in New York; our Hmong interpreters are in the Central Valley, the Twin Cities and Wisconsin, where the community lives, and by phone or video they cover the rest.
About 360,000 Hmong Americans were counted in 2023. California holds a third of them, concentrated in Fresno, Sacramento, Merced and Stockton; the Twin Cities hold the largest urban Hmong population anywhere; Wisconsin's community runs through Milwaukee, Wausau, Sheboygan and the Fox Valley, with smaller settlements in North Carolina, Michigan, Colorado and Oklahoma. Just under three in ten speak English less than very well, and nearly all of those are foreign-born and past fifty.
Hmong Daw or Mong Leng? White Hmong and Green Mong are mutually intelligible in conversation and quietly different in a witness box: vowels shift, some consonants shift, everyday words differ. A Green Mong grandmother giving a medical history through a White Hmong interpreter gets most of it across. Most is not the standard for a diagnosis. We settle the dialect at intake and assign to it.
Minnesota examined the country's first certified Hmong court interpreters in 2000 and still tests in Hmong; Wisconsin lists it as a certification language and has said openly that its courts borrow Hmong interpreters from across the Minnesota line; California registers rather than certifies. That patchwork decides what a judge will accept, so give us the court and the case type and we match the credential. The cases are often family court, juvenile matters and criminal trials in which a Hmong elder is a witness, and the interpreter needs a firm grip on clan and kinship terms, because a Hmong witness identifies people by clan before name. Prism is a private agency, not a court-appointed vendor.
Hmong medical interpreting has a history. The best-known book about a hospital failing to communicate with a family, The Spirit Catches You and You Fall Down, is about a Hmong child in Merced, and it stays on medical school reading lists because the mistakes it describes recur: a diagnosis with no Hmong word, a treatment explained through a child, a consent form signed without being understood. Hospitals and clinics that take federal funding must provide a Hmong interpreter at no cost. Traditional healing, the clan's role in decisions and a deep reluctance to speak of surgery or death directly are things a Hmong interpreter recognises and a bilingual teenager does not. For oncology, obstetrics and mental health we send someone in person.
Asylum is not the Hmong USCIS story; naturalization is. Thousands of older Hmong residents qualify for the exemption that lets an applicant over fifty with twenty years as a permanent resident, or over fifty-five with fifteen, take the civics test in their own language, and USCIS lets that applicant bring an interpreter. The Hmong interpreter renders the officer's questions and the applicant's answers exactly, civics questions included, without prompting or explaining. A confident grandchild interpreting at the desk is a common sight and a bad idea; the officer can and does stop an interview over it.
A Hmong family's file is rarely built on a birth certificate. Families from Laos passed through Thai camps, Ban Vinai and later Wat Tham Krabok, and many older people were never registered anywhere; what exists is a refugee travel document, an I-94 stamped under section 207, a camp identity card or a family record written down years later. USCIS accepts secondary evidence and affidavits where a birth record cannot be obtained, and it helps the case when each paper is translated for what it is, with a translator's note naming the issuing body, rather than dressed up as something it is not.
Vang or Vaj? Both, on different papers. Written Hmong in the Romanized Popular Alphabet marks tone with a final consonant, so the clan name Vang is spelled Vaj and Xiong is Xyooj, and a clan record, a resettlement form and a US driver's licence can disagree three ways. We spell to the passport or green card and note every variant. The full document service is at certified translation.
Tell us the date, the city and the setting, or send a clear scan of the document. We reply with a fixed price and, for interpreting, a named linguist. Call +1 (833) 282 8883, email info@prismlinguistics.com, or use the quote form and you will hear back within 60 minutes during business hours.
Our only office is in New York, and our Hmong interpreters work nationwide. For in-person work we assign someone based in or near the city. These are the areas where Hmong work is concentrated; the full list of 288 cities is below it.
Prism Linguistics is rated 4.6 out of 5 across 67 client reviews for its interpreting and translation work in the United States. That is the company-wide figure; we do not publish a separate rating per language because there is no honest way to measure one. If a Hmong assignment ever falls short, tell us and we put it right.