The Constitution restricts the exporting state from taxing. The courts have ruled that the importing state can tax, but they can’t force other states to collect for them.
With all the different taxing entities & different rates,it seems ludicrous that a retailer in any state should be trying to collect tax for another state. Most of that tax money gets pissed away by politicians anyway. The heck with them;let them suffer the same way the tax payer has to anyway & don’t complicate things for an online seller,especially if they are selling products you can’t procure locally anyway.
That exporting state tax is considered an excise tax. The question if sales tax is what is currently before the court