Mark Osler : 39 years after Roe v. Wade , time limits on abortion should be rethought . Comment: Osler says medical technology makes some fetuses viable in second trimester .
Mark Osler : 39 years after Roe v. Wade , time limits on abortion should be rethought . Some states have no statutory time limit ; others allow abortion up to the end of second trimester . Osler says medical technology makes some fetuses viable in second trimester .