I think one side of the aisle is definitely more to blame than the other for this manufactured controversy, but to be fair the Democrats also intentionally conf

I think one side of the aisle is definitely more to blame than the other for this manufactured controversy, but to be fair the Democrats also intentionally conflate the pension and healthcare liabilities, for somewhat similar reasons as the Republicans. Democrats have put themselves in the position of implicitly defending pay-go funding for pensions because they don't want to spook public sector unions at the state level where pay-go is the norm. (At the federal level the USPS was the outlier for using pay-go, rather than fully funding liabilities.) It's indefensible policy wise. The USPS is capable of fully funding the pension liabilities and are making solid progress. It's the healthcare liabilities which are bankrupting them, but Congress has prohibited them from cutting retiree healthcare benefits even though the USPS deliberately (and smartly) negotiated for that flexibility in the union contracts.