"Roughly half of the crimes committed in the United States are done by individuals born prior to the legalization of abortion. As these older cohorts age out of criminality and are replaced by younger offenders born after abortion became legal, we would predict that crime rates will continue to fall. When a steady state is reached roughly twenty years from now, the impact of abortion will be roughly twice as great as the impact felt so far. Our results suggest that all else equal, legalized abortion will account for persistent declines of 1 percent a year in crime over the next two decades. To the extent that the Hyde Amendment effectively restricted access to abortion, however, this prediction might be overly optimistic. While falling crime rates are no doubt a positive development, our drawing a link between falling crime and legalized abortion should not be misinterpreted as either an endorsement of abortion or a call for intervention by the state in the fertility decisions of women. Furthermore, equivalent reductions in crime could in principle be obtained through alternatives for abortion, such as more effective birth control, or providing better environments for those children at greatest risk for future crime."