Till the last week, I worked for one of the largest major package shipping companies in the US. Yeah, not surprised. Anti-postal lobbying by FedEx, UPS, DHL is just insane. They view US postal service as a competitor who has unfair edge over them.
I guarantee you, if you were to dig just deeper into that story, you will find aggressive lobbying. With Amazon having their own delivery service, this will intensify, because it cuts into their piece of the pie.