Tom, it's behind the paywall. Can you give a quick summary?
Letter deliveries dropped by 40%, so the USPS needed additional revenue.
For them, the incremental cost to carry light packages, to residential houses on their routes, is very small.
The USPS gives Amazon, and presumably other volume entities price breaks, if they pre-sort, etc.
The implication is this constitutes a special subsidy for Amazon, but I doubt it is exclusive to Amazon.
The USPS gives businesses discounts, for presorting, for example.
So it is essentially a dishonest headline, omitting the facts I just added.