When abortion WAS illegal in this country (prior to 1973), were women prosecuted for acquiring one?
If that's the extent of the pro-life movement's ambitions, then great, but again -- I fail to see how that changes much. Women will still have a license to abort, abortions will still be common (perhaps MORE common, since current pro-life laws like informed consent would be gone), and the law will still treat abortion as something less than murder.
If this is all the pro-life movement is trying to accomplish, then it would be far more effective if it became a purely cultural, not political, movement.