If they lay out on internet tax the money has to go to the Feds not the States.
Again, how long will that take?
The States can put on duties (which is not proposed), but if they did the money would have to go to the Feds. Article I, Section 10: "No State shall, without the Consent of the Congress, lay any Imposts or Duties on Imports or Exports, except what may be absolutely necessary for executing it's inspection Laws: and the net Produce of all Duties and Imposts, laid by any State on Imports or Exports, shall be for the Use of the Treasury of the United States; and all such Laws shall be subject to the Revision and Controul of the Congress."