Trump attacks Amazon, again, over U.S. postal rates

Investor concerns about regulatory action sent Amazon shares down 3.3 percent over Wednesday and Thursday, knocking $24 billion off the company's market value."While we are on the subject, it is reported that the U.S. Post Office will lose $1.50 on average for each package it delivers for Amazon.A Citigroup analysis last year showed that if the U.S. Postal Service (USPS) reallocated costs to account for the growing volume of packages it delivers, it would cost $1.46 more to deliver each package.