In a 5-4 decision, the Supreme Court overruled Williamson County Regional Planning Comm'n v. Hamilton Bank of Johnson City, 473 U.S. 172 (1985) and held that owners aggrieved by state regulations they believe took their property without just compensation can immediately sue for relief in federal courts under 42 U.S.C. §1983 even if state law would have provided just compensation through administrative procedures....
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