constitutional amendments
...that twenty-seven U.S. states have adopted constitutional amendments to prevent same-sex marriage or civil unions?
...that twenty-seven <a href="./U.S._state" id="mwBZs" rel="mw:WikiLink" title="U.S. state">U.S. states</a> (<i id="mwBZw">pictured</i>) have adopted <b id="mwBZ0"><a class="mw-redirect" href="./List_of_defense_of_marriage_amendments_by_type" id="mwBZ4" rel="mw:WikiLink" title="List of defense of marriage amendments by type">constitutional amendments</a></b> to prevent <a href="./Same-sex_marriage" id="mwBZ8" rel="mw:WikiLink" title="Same-sex marriage">same-sex marriage</a> or <a class="mw-redirect" href="./Civil_unions" id="mwBaA" rel="mw:WikiLink" title="Civil unions">civil unions</a>?