There may be some confusion about the "tax" that's proposed to be blessed with a permanent ban.

It's not a sales tax on internet commerce. It's the monthly sales tax that your local broadband provider pays to your local government, like the tax on phone service. More clearly, it's for the service, not the stuff you purchase over the service.

As for violating the "Commerce Clause", if the same logic is applied, the state fuel and road taxes violate it already as a use tax.

What the "Feds" are doing, is giving an unfunded subsidy to the broadband industry, that affects the bottom line of state budgets. That is classic federal interference with state economies.