Mexican deputies have approved a measure barring legal marriage involving minors. The vote is described as the first legislative defeat for the political camp known as the Peñista. The decision tightens civil-law rules by removing the option of marrying below the legally permitted age. It also puts pressure on legislators who may have expected the proposal to advance without such a setback. The reported outcome suggests support for stricter marriage rules was stronger within the chamber than the Peñista camp had anticipated. Details about the size of the vote and the date the restriction takes effect were not provided.