1- Dems are upset Republicans didn't support the Affordable Care Act even though the ACA was a Republican idea, thought up by the Heritage Foundation and implemented in Massachusetts by Mitt Romney. Got it? The Affordable Care Act is a Republican idea.
2-Dems are upset the Republicans won't suggest a replacement for the Affordable Care Act. Got it? The Republicans have no ideas for health care.
But if #1 is true, number #2 is false, since the ACA IS a Republican idea.
So the real question is, When are the Democrats going to suggest a health plan of their own? And if the answer is Medicare for All, the question is, Why didn't they pass that in 2008 instead of passing the opposition party's plan?