You’re a confused follower.
Read the constitution.
Taxation of interstate commerce is not permitted by anybody.
I’ve read it. There is no prohibition on taxing interstate commerce. I do notice that congress is however granted authority to both lay and collect taxes and to regulate interstate commerce.
The USSC has interpreted this to mean than only congress can tax or grant the authority to tax interstate commerce under their regulatory power.
Parse it anyway you want, the USSC will parse it the way they always have.