I realize this is a fairly new debate in our body politic,but this is actually old news.the USPS has been under attack for decades.
https://ips-dc.org/how-congress-manufactured-a-postal-crisis-and-how-to-fix-it/#:~:text=In%202006%2C%20Congress%20passed%20a%20law%20that%20imposed,health%20care%20costs%2C%2075%20years%20into%20the%20future.