"[T]he bailout is based on investment returns equal to the low end of a plan's discount rate for 2019 or 5.5%. Central States used 3% for 2019, although pension promises were made in prior years using 7.5% and 8% ... [T]he ultimate heist would be for Central States to flip its interest rate back to 8% for purposes of future contributions while collecting from taxpayers at 3% ... For new pension promises due in 30 years, Central States would get $4 from taxpayers for every dollar it charges employers."