question: What must happen before the Supreme Court will reverse a decision by a lower court refusing to uphold a constitutional law ?
answer: constitutionality has been expressly established in prior cases
turker_answer: The Supreme Court will reverse a decision by a lower court refusing to uphold a constitutional law when constitutionality has been expressly established in prior cases .
rule-based: Constitutionality has been expressly established in prior cases must happen before the Supreme Court will reverse a decision by a lower court refusing to uphold a constitutional law .