jan 1, 1992 - Planned Parenthood of Southeastern Pennsylvania. v. Casey

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In Planned Parenthood of Southeastern Pennsylvania. v. Casey, the Supreme Court upholds the core of its Roe v. Wade ruling and ban states from outlawing most abortions. But it abandons the trimester plan and instead adopts a new test -- abortion regulations that present an "undue burden" on women's constitutional right will be prohibited.