It's not as absurd an idea as we once would have thought. In today's political climate, there is no "reason" to anything. This could very well come to pass.
“And if the mother, due to medical reasons, spontaneously miscarries, does she then get charged with murder?”
You answered your own question with the inclusion of the word spontaneous. You obviously know the answer to this question, which is no, but apparently throw it up in an attempt to cloud the issue.