Alabama jailing pregnant marijuana users

*Alabama is jailing pregnant marijuana users to "protect" fetuses.*

This also has the effect of preventing them from getting an abortion, which they ought to do if pregnant and using marijuana.

What about pregnant tobacco users? Pregnant alcohol users? The same logic applies to them, but tobacco and alcohol are not illegal, so the state has no basis to arrest them. If the US government legalizes marijuana, it might protect the victim of this law.