If there is a federal agency approximating the present USPS 20 years from now I shall be quite surprised.
Guess you surprise easy. I guarantee there will be a USPS still around as long as there is a US to PS for. As much as people whine and moan about it it’s still a vital part of the nation. Even with volume declined they’re still processing 78 TRILLION pieces of first class mail a year, and that’s just the first class. That need isn’t going to disappear in 20 years. Really what’s killing them is that congress is forcing them to prefund retiree health care for 75 years, nobody can survive that kind outlay. If some grownups wind up in charge again and their pension expenses go back to something normal and real world their finances will be fixed in 10 minutes.