https://www.reuters.com/article/us-amazon-com-trump/amazon-shares-pare-some-gains-as-trump-attacks-company-again-idUSKCN1HA1RR >Shares of Amazon.com Inc pared earlier gains on Tuesday after U.S. President Donald Trump repeated his unsubstantiated claim that the world's biggest online retailer's deliveries cost the U.S. Postal Service money.