In Planned Parenthood of Southeastern Pennsylvania v. Casey,\u27 the Supreme Court replaced the trimester framework, first articulated nineteen years earlier in Roe v. Wade,2 with a new test for determining the constitutionality of abortion regulations-the undue burden standard. 3 The Court\u27s 2007 decision in Gonzales v. Carhart 4 was its most recent occasion to use the undue burden standard, as the Court was called upon to ascertain the constitutionality of the Partial-Birth Abortion Ban Act, a federal statute proscribing certain methods of performing second- and third-trimester abortions.5 A majority of the Court held that the regulation was constitutionally permissible, finding that it did not impose an undue burden on a woman \u27s ...