Matt Miller hits on one of the most important points in the abortion and health-care debate. The practical effect of Bart Stupak's position is not that the federal government will not subsidize abortion by subsidizing health-care insurance. It is that it will not subsidize abortion by subsidizing health-care insurance for poor women. We already spend much more subsidizing coverage that includes abortion for richer women:

This entire debate is ridiculous, because the feds already subsidize abortions massively, via the giant tax subsidy for employer-provided care. Today the feds devote at least $250 billion a year to subsidizing employer-based coverage, a subsidy that skews incentives horribly (but which big business and big labor wouldn’t let the politicians touch this year). A Guttmacher Institute study says that 87 percent of typical employer plans cover abortion, and a Kaiser study found that 46 percent of covered workers had abortion coverage.

As I've written before, the Stupak amendment is as much about class as it is about choice. Imagine if Stupak attempted to expand his campaign to the coverage employed women receive. It would, after all, be the same principle: Federal policy should not subsidize insurance that offers abortion coverage. But it wouldn't have a chance. That group is too large and too affluent and too politically powerful for Congress to dare to touch its access to reproductive services. But the poorer women who will be using subsidies on the exchange are a much easier target.