WSJ: Arthur Laffer: Tax Internet Sales, Stimulate Growth Max Effgen, April 20, 2013September 5, 2014 Comment on Dr. Laffer’s recent Wall Street Journal opinion piece on taxing internet sales. Sales taxes are legally due for in-state transactions. The online retailer (e.g., Amazon, etc.) does not have the obligation to collect these taxes due to the Internet Tax Freedom Act (ITFA), enacted in 1998 and extended…