(TheLeafChronicle) - A federal court ruling against a Kentucky law prohibiting wine and liquor sales at grocery stores could energize efforts to loosen similar regulations in Tennessee, business groups said Tuesday. The ruling by U.S. District Judge John G. Heyburn II found the neighboring state’s law unconstitutional by preventing grocery and convenience stores from selling liquor and wine but allowing other retailers to do so. The judge said the 70-year-old law violated the equal protection clause of the Fourteenth Amendment of the U.S. Constitution.