Your Mexican engineer wants to work in the United States. Your competitor filed H-1B lottery petitions in March, paid the registration fee, waited to lose the lottery, and now — if the proposed rule holds — is looking at a $103,265 per-petition supplemental fee even for a winner. Meanwhile, the Mexican citizen with a bachelor’s degree in engineering and a job offer can be at a U.S. consulate in Mexico in weeks, walk out with a TN visa good for up to four years, and start work as soon as CBP admits her at the border. No cap. No lottery. No labor condition application. The government charge, all in, is $185 for the visa application plus a reciprocity fee of $79 or $357 depending on validity elected.
This is not a loophole. It is INA § 214(e), implemented at 8 C.F.R. § 214.6 on the DHS side and 22 C.F.R. § 41.59 on the State Department side, both riding on Appendix 2 to Annex 16-A of Chapter 16 of the United States–Mexico–Canada Agreement. USMCA replaced NAFTA in 2020 and kept the professional-worker category intact. It is the fastest legal work visa available to a Mexican citizen with the right credentials, and most who qualify rarely hear about it because their employer’s immigration budget is aimed at H-1B.
What the category actually is
TN is a nonimmigrant classification for citizens of Canada or Mexico coming to the United States to engage in prearranged business activities at a professional level, for a U.S. employer or entity, in a profession listed in Appendix 2. The list is closed. If the profession is not on it, TN is not available.
Appendix 2 covers 63 professions. The ones I see most often: engineer, computer systems analyst, management consultant, accountant, architect, graphic designer, scientific technician, economist, registered nurse. Each has its own minimum credential — usually a baccalaureate or Licenciatura degree, sometimes a state license, sometimes a post-secondary diploma or certificate plus three years of experience. Two traps: computer systems analyst is on the list, but “software developer” and “software engineer” are not; management consultant is on the list, but the credential rule is strict and the position has to be genuinely consultative, not a line-management job with a marketing title.
Temporary entry, per 22 C.F.R. § 41.59(c), “means an entry into the United States without the intent to establish permanent residence.” That does not mean the applicant cannot ever pursue a green card. It means at the time of application the applicant must satisfy the consular officer that the proposed stay is temporary — a finite assignment with a foreseeable end. The INA § 214(b) presumption of immigrant intent applies. TN is not dual-intent the way H-1B and L-1 are. Filing an I-140 or having a pending PERM materially raises the risk on the next TN renewal or border admission.
How a Mexican citizen actually gets it
Canadians present at a Class A port of entry with the letter and documents and are inspected on the spot. Mexicans cannot. 8 C.F.R. § 214.6(d)(1) requires a Mexican citizen to appear at a U.S. consulate in Mexico, obtain a TN visa, and only then present the visa and passport to CBP at a port of entry.
The employer’s offer letter is the case. It has to name the Appendix 2 profession, describe duties in enough detail to show they require a professional, state the period of employment (up to three years), state salary, and identify the U.S. employer. A weak letter fails; a letter written to the profession, with duties that plainly match Appendix 2, gets approved.
The applicant assembles credentials — degrees, transcripts, licenses. A degree from outside Canada, Mexico, or the United States requires a credentials evaluation. A Licenciatura satisfies the baccalaureate requirement where the Appendix says “Baccalaureate or Licenciatura Degree.” For state-licensed professions — architect, engineer, registered nurse, physical therapist — the state license takes the place of the degree requirement and often has to be attached even where the applicant also holds a degree.
Then DS-160 and the government MRV filing fee of $185, and an interview at Ciudad Juárez, Guadalajara, Monterrey, or CDMX. Wait times vary; a nonimmigrant applicant may apply at any consulate, so pick the wait. The consular officer decides two things: whether the offered position is a listed profession at professional level, and whether the applicant has demonstrated nonimmigrant intent under 214(b). Most TN refusals I see are 214(b), not credential problems.
The State Department reciprocity schedule for Mexico currently sets two TN options: a 12-month multiple-entry visa at a $79 issuance fee, or a 48-month multiple-entry visa at $357. TD dependents match. The visa validity is not the period of admission; CBP still admits the TN in status for up to three years per entry under 8 C.F.R. § 214.6(e), regardless of visa validity beyond it. A four-year visa means the applicant does not have to re-interview at a consulate until year five.
What Mexican TN does not require, and what that is worth right now
TN is not petition-based at the consular stage. There is no I-129 in the front-end route for a Mexican citizen abroad, so no USCIS filing fee, no premium processing, no Fraud Prevention or ACWIA add-ons. There is no labor condition application. There is no cap. TN admissions are limited only by the ability of individual applicants to qualify. Compare that to the H-1B cap of 85,000 for FY2026, exhausted every year in the March registration.
And there is no proposed $103,265 supplemental fee. On August 25, 2026, DHS published an NPRM — Doc. 2026-17324 — proposing an additional per-petition charge of $103,265 on cap-subject H-1B petitions under new 8 C.F.R. § 106.2(a)(3)(xii). The comment period closes September 24, 2026. TN is not H-1B and the fee is nowhere on the horizon for it. That is not accident of drafting; the fee is aimed at H-1B specifically. A Mexican professional who qualifies for TN and a role that could be either TN or H-1B belongs in TN.
Where Mexican TN goes wrong
The wrong profession on the letter. “Software Developer” is not on Appendix 2. Neither is “Data Scientist,” “Product Manager,” or “Marketing Manager.” Reframing duties so they match “Computer Systems Analyst” or “Economist” can work — when the duties actually do that work — and looks like a scheme when they do not. If the duties are consultative and analytical, describe them that way. If they are line management with a manager title, TN is not available; the answer is H-1B, L-1, or O-1.
Weak nonimmigrant intent. A pending I-140, a spouse’s I-485, a filed PERM — each puts 214(b) at risk on the next TN renewal or reentry. So does a pattern of continuous TN presence over many years with a U.S. residence, U.S. schooling for the children, and no ongoing tie in Mexico. TN is renewable indefinitely on paper. Renewals are decided one at a time, and the officer looks at the whole record. Long-term TN holders should keep the ties documented and should think carefully before starting a PERM.
Self-employment. 8 C.F.R. § 214.6(b) is explicit: TN “does not authorize the establishment of a business or practice in the United States in which the professional will be, in substance, self-employed.” A sole shareholder cannot use TN to work for the corporation the shareholder controls. This is a common failure among founders trying to do TN. Route them to E-2 (Mexico is an E treaty country) or O-1 if extraordinary ability applies, not TN.
Confusing 3-year admission with the 4-year visa. A four-year multiple-entry visa is the visa’s validity period. Admission remains up to three years per entry. CBP writes the I-94 to the shorter of the visa validity, the letter’s stated period, or three years. Overstaying the I-94 because the visa is still valid is a common and expensive mistake — it triggers unlawful presence and, at 180 days, the three-year bar, on top of automatic visa voidance under INA § 222(g).
Employer changes. A Mexican TN who wants to change employers has two options: leave the U.S. and reapply at the consulate with a new offer letter, or stay and have the new employer file Form I-129 with USCIS to change the employer of record. The I-129 route works but is slower than the border route Canadians use, and it carries the USCIS filing fee at 8 C.F.R. § 106.2. Do not start work for the new employer before the new employment is authorized.
Where Mexican TN goes right
Two scenarios where I steer straight to TN over H-1B:
The engineer with a Mexican Licenciatura in mechanical engineering, a job offer from a U.S. manufacturer, and a target start date in ninety days. H-1B is unavailable outside the March registration; even if the client wins the cap-subject lottery next spring, the earliest start is October 2027. TN, with a well-drafted letter and a scheduled interview, has the client at work in weeks and the visa book stamped for four years.
The management consultant working for a global consulting firm on a series of U.S. client engagements. H-1B would consume a cap number and expose the firm to a proposed six-figure supplemental fee if the rule finalizes. TN works if — and only if — the letter is written to the Appendix’s management-consultant profile, the duties are genuinely consultative, the assignments are project-based, and remuneration is set to something other than a base-plus-bonus employee package. Done right this is the best-value work visa in the system. Done wrong it is a 214(b) refusal and a burned interview slot.
What to do
If you are a Mexican citizen with a bachelor’s degree in a profession that appears in Appendix 2 and a U.S. employer that wants you now, TN is almost certainly your path. If you are the U.S. employer, and you have been running everyone through H-1B out of habit, run the Appendix 2 list against your open reqs. Every Mexican citizen you can hire on TN instead of H-1B is a cap number you do not need and a proposed rule H-1B $103,265 filing fee you do not expose the company to.
Call (562) 495-0554 or book a paid 20-minute consultation at blerner.timetap.com.
This article is general information about United States immigration law and is not legal advice. Reading it does not create an attorney-client relationship. Immigration outcomes depend on the specific facts of each case. Law Offices of Brian D. Lerner, A Professional Corporation, 3233 E. Broadway, Long Beach, CA 90803. Brian D. Lerner is a Certified Specialist in Immigration and Nationality Law, The State Bar of California Board of Legal Specialization.