Imposing more Mickey Mouse taxes in Illinois is just goofy, but that’s what a proposal in Springfield would do to users of the new Disney Plus and other streaming services.

Lawmakers in the Illinois House are weighing a bill that would tax streaming and satellite service users “for the privilege to witness, view, or otherwise enjoy the entertainment.”

The Illinois Supreme Court today struck down the state’s “Amazon Tax,” a state law that forced online retailers to pay Illinois taxes regardless of whether they had a storefront or other physical presence in the state. In its ruling, the Supreme Court indicated that it struck down the law because it conflicts with a federal...