I believe the problem comes from having a physical presence in the state. Most states have sales tax rules that say if you have a physical presence, you must ch

I believe the problem comes from having a physical presence in the state. Most states have sales tax rules that say if you have a physical presence, you must charge sales tax. The rules were changed such that Connecticut is treating affiliates as a physical presence. If Amazon keeps the affiliates, they have to charge sales tax on everybody who purchases in Connecticut, which they really don't want to do. While I'm sure part of the reason they don't want to charge tax is that no tax makes Amazon cheaper, I bet a bigger portion is the headache of trying to manage every single municipalities convoluted sales tax rules. I know in my city (in Utah), there are dozens of rules for types of goods that determine different rates. Imagine doing that on a nationwide scale.