"These organizations share the view that restrictive state abortion laws, such as the Texas statute here under review, have a negative effect on the health and wellbeing of American women, and have a particularly severe impact on the nation’s poor and non-white populations. It is the poor and non-white who suffer most from limited access to legal abortion, and it is they who incur greatly disproportionate numbers of deaths and crippling injuries as a result of being forced to seek criminal abortion...."