The lesson of the government shutdown is that it is really rotten to be the side with almost no power. If power corrupts, powerlessness leads to paralyzing recriminations.

Among Democrats, neither progressives nor moderates have fully come to terms with the box their party is in. If they continue to put their internal quarrels above finding a better joint strategy, the victors will be President Trump, Senate Majority Leader Mitch McConnell (R-Ky.) and House Speaker Paul D. Ryan (R-Wis.).

The Democrats' feuding factions could start by laying off the self-righteous preening about how they are, respectively, so principled and so practical. The truth is that the aspirational left can't win without the pragmatic center, and the center can't win without the left.

Instead, they should be highlighting what the shutdown made clear. In mobilizing raw nativism, Trump and the Republican leadership underscored the extent to which they are hogtied by their party's right-wing extremists. As a result, the GOP is incapable of temperate governance and compromise. The barrier to sensible legislation in Washington is not a left that lacks any institutional authority, but the hard-line right in the White House and in the House of Representatives.

The Democrats lost the shutdown before it started, when Ryan pushed through a short-term spending bill that narrowed the issues at stake by including a six-year extension of the Children's Health Insurance Program.

The renewal of CHIP could have been taken as an important Democratic victory. But Trump had already changed the context of the debate with his disgracefully cruel decision in September to end the Deferred Action for Childhood Arrivals program, or DACA, which protects undocumented immigrants brought to the United States when they were children.

Democrats were moved to force the "dreamers" issue not just by the demands of liberals but also by the requirements of sheer decency. There was additional fury at Trump for blowing up a DACA agreement negotiated painstakingly by Sens. Lindsey O. Graham (R-S.C.), Richard J. Durbin (D-Ill.) and others. Most Democrats therefore felt they had to reject a budget deal without a dreamers fix, even if shutdowns are hardly an ideal strategy for the party that respects the work government does.

The Fix's Amber Phillips explains the obstacles of immigration negotiations and whether Democrats will fund a border wall. (Joyce Koh/The Washington Post)

Republicans moved immediately and shamelessly to endanger Democratic senators from Trump states who are on the ballot this fall. Forgetting every kind word they had said about the dreamers, the GOP's leaders converted these sympathetic Americans into "illegal immigrants" and said the shutdown was all about them. Trump's campaign committee ran a reprehensible ad that claimed Democrats were complicit in murders committed by immigrants.

The GOP drew blood, red-state Democrats scrambled for a quick exit ramp, and the bipartisan group of moderates organized the retreat. Despite the favorable publicity showered on the dealmakers, there is nothing particularly heroic about solving a short-term political problem and, at best, pressuring McConnell to hold a debate on immigration. There is no guarantee the dreamers will be protected.

Progressives, including disheartened Latino groups, were understandably angry. But they would be hard-pressed to make the case that if the Democrats had held out longer — two weeks? three weeks? — they would have prevailed. The very structure of the Senate is unfair. It vastly underrepresents states with substantial numbers of immigrants and younger, urban voters who empathize with them. It overrepresents older, overwhelmingly white and rural states. If Democrats are ever to gain the majority in the Senate, they have to win and hold many of these states.

Thus the Catch-22 Shutdown, morally necessary and politically unwinnable.

So what now? The moderates and the progressives should stop bickering and push recalcitrant House and Senate Republicans into taking a stand on a humane solution for the dreamers. Activists should direct their energy the same way.

Math is a stubborn thing. Republicans have the votes, and Democrats don't. There can be little hope of progress unless the GOP's non-nativists break with their leaders.

In the meantime, left and center must link progressive immigration policy to progressive economic initiatives — ones that also speak to red-state voters who have been sold out by Trump. They were stumbling in this direction during the shutdown when they spoke up for adequate funding for community health centers and for combating the opioid crisis.

Republicans are crowing about "winning" the shutdown. But their victory will be short-lived if Democrats (and Republicans willing to work with them) shift the ground of the discussion from tactics to larger purposes. This is a long fight and, like it or not, the endpoint is Nov. 6. Only voters can change the balance of power.

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