While both Trump and his congressional allies remain staggeringly unpopular, recent polling indicates that they might skate by with a narrow House majority in the fall and even pick up a seat or two in the Senate. Analysts now think the Democrats' chances of retaking the House are no better than a coin flip.

This in itself is stunning. Democrats should clean up in the midterms. Instead, they're barely muddling through. And if they fail to take control of one or both chambers of Congress, that future-altering catastrophe can be traced back to the moment in January when they decided to cave on the fight over the DREAMers and started disastrously cooperating with the president and his allies.

At the beginning of 2018, Democrats held an enormous advantage on the generic congressional ballot — almost 13 points. Democratic