More than one source of income while on a TN?

[padraig]

No one seems to know the precise answer to this: I am a TN holder with a regular W2 paycheck from my employer. My tax preparer says I can receive (passive) royalties from a book I wrote while on TN (it's being released in a few weeks) and also passive income on my blog from google ad sense, but I CAN NOT start a writing service or record teaching CDs and charge customers on the side. This latter would be a case of more than one employer -- a TN no-no. Is this correct? If, then I don't understand the distinction between passive and "active" income.
Thanks!
Padraig

[agnelson]

You can have many employers on TN, but thet EACH need to sponsor you.

Your new activities would not be passive, and would not have an employer/sponsor, so would violate TN status.