Health care wars never truly end; they just enter new phases. The core elements of Obamacare—most critically, the individual mandate—are now entrenched. But there are still debates to be had about maintaining insurer subsidies, attracting insurers to uncompetitive marketplaces, reducing consumer costs and achieving 100 percent universal coverage.

In this next phase, unity will be much more difficult for Democrats. Opposing is always easier than proposing, and Democrats are already offering vastly different proposals in response to these issues. Fundamentally, Democrats have to ask themselves: Is it time to go big, or to largely quit while they’re ahead?