Fewer kids means fewer teachers, so why aren't teachers' unions pro-life? This data is as-of 1995:
In this sense, abortion-on-demand already has produced a negative economic effect. In his book, "The Cost of Abortion," researcher Lawrence Roberge correlates the legalization of abortion with a slowdown in the production and sales of child-related items. He also estimates that the loss of millions of children to abortion thus far has precluded creation of between 950,000 to 1.2 million teaching jobs.
Considering how fiercely teachers' unions fight to protect their members, it's strange that they dropped the ball on this one.