A pending petition does not itself establish permission to perform the proposed U.S. work. Determine the authorization required and the relevant approval or admission steps.
Plan around the location and status of the instructor
Record where the employee would physically teach and the status held on each date. Remote participation from Canada and instruction performed in the United States raise different factual questions. Do not assume foreign payroll settles the issue. Agree on a contingency for the course timetable instead of treating its announced opening date as evidence of immigration readiness.
For L-1B, document the qualifying relationship, doing-business evidence, one continuous qualifying year abroad within the preceding three years, and knowledge that is special or advanced in relation to the organization. The five-year overall limit is a planning boundary, not a promise of future approvals. Hypothetical example: a digital-forensics engineer’s foreign employer is being merged into a related company two months before the anticipated transfer. Map the employment dates and corporate documents before filing. The decision is whether the qualifying relationship and continuous foreign employment can be documented through the transaction, or whether the corporate change creates a gap that must be resolved before the U.S. assignment begins.
Put that conclusion beside the record that demonstrates it, then identify any mismatch between the technical narrative, training file, and actual U.S. assignment. A label for expertise is less useful than a traceable explanation of the work it enables.