Amazon collects sales tax on their sales in every state that has sales tax. Explain how they are avoiding taxes.
As CNBC points out, Amazon does in fact collect sales tax in every state that it applies:
So, the President's a little out of date there. But what's changed is this:
And that's the interesting bit about the story. For it most certainly used to be true that Amazon backed the basic law of the land. You only have to collect sales taxes if you're selling in a state where you've a (usually substantial) physical presence. Thus when Amazon only had such presence in a few states it quite merrily didn't collect. As the system has rolled out so that it does have presence in near all states then collection in all of them became the policy. So far so good, just a company obeying the law. But as I've pointed out before it doesn't stop there:
As it turns out Amazon is on exactly the opposite side of the argument than that indicated by Donald Trump. Personally I think that's actually the worse position but that's another matter.
Update: Just to clarify, as this seems to be causing some confusion in the comments, Amazon collects sales taxes in every state which has them on its own direct sales as of April 1 this year. Third party sellers may or may not do so.