An acquisition does not change the underlying USMCA professional requirements — citizenship, a listed profession, the matching credential and prearranged employment still apply — but it can change whether your current facts still satisfy them. If your duties were quietly broadened into non-qualifying work after the merger, or your credential no longer matches an altered role, the requirements have not moved, but your case may no longer meet them.
Reassess fit against the requirements, not against your prior approval
Treat the earlier TN approval as historical evidence of an application that once satisfied the requirements, not as a permanent finding. Compare today's actual duties and reporting structure to the listed profession's definition. If the acquirer has broadened your role to include general management or unrelated commercial work, discuss with a qualified adviser whether the professional-duties requirement is still met before relying on continued status.
Start by turning the job into a duty chart: list each recurring task, who assigns it, and what deliverable shows it was performed. Compare that chart with the precise listed profession rather than with a broad internal title. The first review should produce a short conclusion identifying the profession, the credential record that supports it, and any duty that needs clarification. Citizenship evidence and the employer’s ability to offer prearranged work should sit beside that chart. A degree, licence, or experience record settles only the qualification issue; it does not prove that the actual position fits. Hypothetical example: A coastal hydrologist is offered a role labelled “technical lead,” but the weekly schedule shows mostly sales calls and team supervision. The employer should revise neither facts nor titles merely for the application; instead, it must decide whether the genuine professional duties are sufficiently central. If they are not, an alternative classification may need examination. Do not rely on TN for an arrangement where the person is really operating an independently controlled business for a client.