While I totally agree that smoking / drinking while pregnant is a horrible thing to do, I don't agree with making it a law. First of all, killing unborn babies isn't even a law

so this one does't make sense without that. Second, there's the problem of where to draw the line. I didn't smoke, drink, do drugs, or even take Advil while pregnant but I did eat really badly. I tried not to but I just couldn't control the urge for sugary snacks. I got lucky and didn't get gestational diabetes but I could have. And that can cause problems for the baby. I feel bad that I put my baby at risk by eating too many swiss rolls but should that have been illegal? And, back to smoking, what about smoking around already born kids? That's harmful, too, but not illegal, AFAIK.
So, while I totally agree that it's awful what some pregnant mothers put their babies through, I just don't see this as being law-worthy.
Michelle