It's a good point! Babies are a huge drawback for the country. They show up here and just expect us to pay for their education and welfare, without contributing a penny to taxes or GDP. And if they do eventually learn enough to be useful, it's only to compete with hard-working Americans for jobs. You know, most murderers and terrorists were at one point babies.
It would probably be sensible to vet babies to make sure they accept our values and can contribute to the economy, if not entirely ban them until we can figure out what's going on there.