BigUnionGuy
Got the T-Shirt
There were cuts proposed for Central States after MPRA was attached to the Omnibus spending bill in the 11th hour in 2014.
The Multiemployer Pension Reform Act of 2014
Those proposed cuts were denied by the Treasury Department, not a "membership vote".
Perhaps that is what you are trying to recall?
When it comes to pension issues.... I always defer to @Inthegame.