By Tuesday morning, the leadership failure of Speaker John Boehner was complete. In encouraging the impossible quest of House Republicans to dismantle health care reform, he pushed the country into a government shutdown that will now begin to take a grievous economic toll.

At any point, Mr. Boehner could have stopped it. Had he put on the floor a simple temporary spending resolution to keep the government open, without the outrageous demands to delay or defund the health reform law, it could easily have passed the House with a strong majority — including with sizable support from Republican members, many of whom are aware of how badly this collapse will damage their party.

But Mr. Boehner refused. He stood in the well of the House and repeated the tired falsehood that the Affordable Care Act was killing jobs. He came up with a series of increasingly ridiculous demands: defund the health law, delay it for a year, stop its requirement that employers pay for contraception, block the medical device tax, delay the individual mandate for a year, strip Congressional employees of their health subsidies. All were instantly rejected by the Senate. “They’ve lost their minds,” Senator Harry Reid, the majority leader, said of the House Republicans. “They keep trying to do the same thing over and over again.”

Finally, at the last minute, when there was still time to end the charade with a straightforward spending bill, Mr. Boehner made the most absurd demand of all: an immediate conference committee with the Senate. Suddenly, with less than an hour left, he wanted to set up formal negotiations?