It's clear from the context of this post and subsequent comments that the power to levy income taxes itself is not at issue. What is at issue is California's le

It's clear from the context of this post and subsequent comments that the power to levy income taxes itself is not at issue. What is at issue is California's levying of taxes on non-residents without limit of jurisdiction. That's taxation without representation. It may not be fully-fledged slavery in technical terms, but OP's plight is nothing less than attempted dispossession by the Franchise Board. I'd also like to note that the term "slavery", in a colloquial or non-rigorous sense, has been applied to serious topics both on and off HN. e.g. wage slavery [1], overwork of graduate students, unpaid internships, medical residency practices, etc. I'm quite sure we still have a shared language despite the lack of rigor in those cases. [1] Applied strictly, the term is self-contradictory