To control cost anywhere have to ration, somehow, to make it affordable, and that's easy or difficult depending on a slew of things.
Do our costs of medical services/procedures have to come down? No question. And how do you do that? Well there are a few ways, none of which involve expanding access and entitlement. We can talk about how to suppress cost, but people won't accept it because it means losing benefits.
Anyway, there is not nearly enough time to fix costs BEFORE reneging on unreasonable promises. The unreasonable promises have to be shut off NOW. Then we focus on cost containment and try to get the voters on board with the painful truth of the matter.