Okay, so once again, this thread has devolved down into whining about very rare third trimester abortions, which certainly wasn't the point here.
The point was, what if you anti-abortion religious nutbags got your way and got ALL abortions banned? Because that's what you really want, isn't it, guys?
Well, there's one of two things that can happen.
1) You would have to create a draconian police state, where people inform on their doctors and neighbors who have abortions. You would have to lock women up for having them.
or
2) You can have a law on the books that everyone pretty much ignores, like the prostitution laws in this country, or like the actual abortion laws in the Philippines.
The practicality of 1 is pretty difficult. People would resist the law.
You see, you guys want to scream "Murder" all day, but the fact is, we only have 16,000 murders a year for a reason. People will report murders if they see them. The Police will vigorously investigate them. Witnesses will testify about them, and juries will gladly convict because no one wants a murderer living down the block from them.
At current, we have 600,000 abortions a year. People will not report them. Police will not bother investigating them. There probably won't be any witnesses, but most of them wouldn't testify, and I promise you, half of a jury would think your laws are bunk and wouldn't convict.