They had four years to do it. They didn't. They voted against it under Bush because it wasn't their idea first.
They also knew Medicare Part D looked like chump change compared to Obamacare. They had no leg to stand on.
For the obviously mentally challenged
Obamacare was funded
Part D was not.
Now I would think a couple of "OMG OMG the Debt" yeahoos like Carol & Galt would get that.
But they don't.
They don't because they loved the unfunded spending under Bush that led us to this recession but have freaking fit about the debt under Obama.