https://www.reuters.com/article/us-amazon-com-trump/trump-escalates-attack-on-amazon-focusing-on-tax-shipping-idUSKBN1H51PY >U.S. President Donald Trump accused Amazon.com Inc on Thursday of not paying enough tax, taking advantage of the U.S. postal system and putting small retailers out of business, but did not present any evidence to back up his criticisms or suggest any specific actions he planned to take.