The USCIS petition fee applies only if the employer files Form I-129; a port-of-entry TN carries CBP's application fee instead. State board examination, licensing and background-check charges are practice-related costs set by the state and are separate from the USCIS fee schedule.
Keep the two ledgers apart
A Kent applicant tends to receive one combined quote that mixes immigration and professional costs. Split it. On the immigration side, a port-of-entry application involves the CBP TN fee collected at the border; a USCIS petition involves the Form I-129 fee and any optional premium processing, all listed in the USCIS fee schedule, Form G-1055, which should be checked on the day of filing rather than quoted from memory. On the professional side, the state veterinary board charges for its application, examinations, licence issuance and any background verification, and a credential-verification service may charge separately. None of those is an immigration fee, and none is refunded if the immigration application is refused. Ask the practice group in writing which of these it will pay, because a promise to cover licensing does not automatically extend to the immigration filing, and the answer affects how the offer letter should describe compensation.
Hypothetical example: a Canadian urban planner receives an offer that says the employer will reimburse all relocation expenses, but it does not identify filing, translation or professional-registration charges. The first review turns the promise into a written allocation with amounts and payment timing. The fee receipt and the offer's reimbursement clause settle who paid what; an oral assurance does not. Keep government charges separate from consultant, travel and licensing expenses when comparing the two filing approaches.