"Abortion on demand, throughout the full nine months of a pregnancy, for virtually any reason, became public policy in the United States of America. No other developed democracy had, or has, such a permissive abortion regime"

This quote by Robert Casey is referring to the landmark Supreme Court case Roe v. Wade in 1973, which legislated abortion in the United States. The quote is stressing the fact that the United States has a far more liberal abortion program than any other developed democracy. This indicates that abortion is allowed as needed, throughout the full nine months of a pregnancy, and for essentially any reason. This is a lot more liberal policy than other nations, which typically have constraints on when and why abortions can be performed. This quote is highlighting the truth that the United States has a lot more progressive stance on abortion than other nations.