There's a huge difference between being required to support each of your locations and being required to support each of your customer's locations. Each Walmart

There's a huge difference between being required to support each of your locations and being required to support each of your customer's locations. Each Walmart is able to sell to nearby customers. Asking internet retailers to collect local taxes would be like requiring Walmart to get home addresses for each of their customers and collect taxes according to that address instead of the store's address.