[ensignavenger]

No, if the buyer and seller do not reside in the same state (an by reside, for the seller, it includes having a business "nexus") then it is interstate commerce, and states can't require sellers to collect sales tax. (They usually instead impose use tax on the buyer).

[mikeash]

I don't understand, what's "no" about that? I didn't say sellers were required to pay tax, merely that paying tax was still required. As you say, it becomes the buyer's responsibility if the seller doesn't have a presence in the state.