When a court strikes down a federal/state law or state constitution as unconstitutional, can the legislature just leave that unconstitutional provision on the statute book as long as the executive does not enforce it, or is there an obligation to repeal the unconstitutional provision? I have been reading US state constitutions recently and noticed many have provisions barring same-sex marriage, which are obviously unenforceable following the Supreme Court decisions on the matter. Can the states just leave these provisions in their constitutions indefinitely
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If a law or state constitution is struck down as unconstitutional, is there an obligation for the legislature to repeal it?