House Republicans used a motion to recommit yesterday to remove the individual mandate from the Affordable Care Act, but failed by a 230-187 margin. Joseph Cao (R-LA) was the only Republican to vote against the provision, while 21 Democrats voted for it.

The motion to recommit allows the House minority, at the end of a vote, to add a change to the underlying bill, without giving notice on the nature of the changes until minutes before the vote. It has been used by the Republicans to create embarrassing votes or make ideological statements. Occasionally the motions to recommit pass, as happened with the COMPETES act (a science and technology bill) a few weeks ago, but House Democrats figured out a way to deal with it on a second pass without having to accept the weakening parts of the motion.

It’s interesting that the House Republicans quietly took aim at the individual mandate. This was a point of contention for Republicans and progressive Democrats alike during the health care debate. Supporters of the Affordable Care Act counter that a lack of a mandate will raise premium prices, as insurance companies would respond by increasing costs to hedge against the risk of customers signing up only when they get sick. They claim that individual premiums would rise by 40%.

However, 21 Democrats still voted for it. And what that shows is that the danger to the Affordable Care Act is less repeal than a gradual assault on individual provisions, one by one. The subsidies are probably most at risk, since they have to be affirmatively approved. But expect House Republicans to continue to attack provisions like the individual mandate as well, perhaps even with eventual success, if this vote and the expected gains in November are any indication.