[victorhn]

I am from Mexico and am currently employed on a TN visa, if my company intends to start working remotely, is it valid to keep working under this visa if i won't be physically living on the USA (i would live in Mexico, but maybe travel to US some days per year to US) or should i switch to another schema (like working as a contractor)?

Also, what about working for some months on USA and other months on Mexico? Does the visa allow this scenario or are there chances the custom agent get more inquisitive about these frequent trips?

[proberts]

The TN is irrelevant if you are living in Mexico. You can work for a US company without a TN visa or any type of work authorization if you are living in Mexico. Once you enter the US, however, you would need work authorization and your TN would remain valid for the limited intermittent employment that you describe. You might have some explaining to do when you travel to the US because of your absences but legally what you describe is fine.