20 years ago was 2000; or, the last time a Republican was elected. So it's not like this is unprecedented, it's just what happens when the GOP gets power, and there was a Dem president between the last two. Really, it's surprising Trump waited as long as he did when gutting the USPS was apparently job #1 for W.
Also, the Postal and Accountability Enhancement Act that all the #Resistance centrists are currently bemoaning was approved overwhelmingly by democrats in both houses.
https://www.govtrack.us/congress/bills/109/hr6407
Passed so unanimously in both houses that no record of who voted how was made, but
https://www.govtrack.us/congress/votes/109-2005/h430
Which preceded it in a previous congress, and is functionally the same. 100% support from House dems - has all your favorite Heroes. Pelosi, Schiff, Hoyer, all yeas.
The dems had a -7 disadvantage in the House and there were 10 GOP defectors. They could have stopped it. Instead they passed it with more enthusiasm than the Republicans. It's almost like voting for the lesser of two evils, now, has way worse knock on effects, later.