Chris Edwards, "Privatizing the U$.$S$.$ Postal Service"

In addition to its monopoly over first$-$class mail delivery and access to mailboxes, what other benefits does the United States Postal Service $($USPS$)$ enjoy, according to Edwards? On the other hand, how has Congress prevented the USPS from operating like a private business? What other challenges does it face?

What incremental reforms has the USPS undertaken? Why have they been insufficient, in Edwards's opinion?

In what ways would privatization be a more effective way to reform the USPS, according to Edwards? Which other countries have undertaken similar privatization reforms?