When an Illinois resident buys something from Amazon from the comfort of their own home in Illinois, they are not importing something from another state.
Yes, legally they are. That is exactly what they're doing. We don't call it imports simply because we have a federal law that prohibits any non-federal regulation of interstate trade (i.e., imports) and there is no such law beyond the boundaries of the United States, but there's a reason we're called the United States. In an important sense, we're 50 different countries that have delegated most of their law to a federation.
Yes, legally they are. That is exactly what they're doing. We don't call it imports simply because we have a federal law that prohibits any non-federal regulation of interstate trade (i.e., imports) and there is no such law beyond the boundaries of the United States, but there's a reason we're called the United States. In an important sense, we're 50 different countries that have delegated most of their law to a federation.