President Trump has launched an attack on Amazon saying it pays little or no local or state taxes.
He also accuses it of “putting many thousands of retailers out of business”.
Mr Trump added in a tweet that “they [sic] …use our Postal System as their Delivery Boy (causing tremendous loss to the U.S.)”.
It follows a report on the news website Axios on Wednesday that claimed Mr Trump wanted to “go after” Amazon.
Amazon shares fell more than 4% on Wednesday.