proposed constitutional amendment
... that 41 U.S. states follow the single-subject rule for legislation, and a proposed constitutional amendment would extend it to the federal government as well?
... that 41 U.S. states follow the <a href="./Single-subject_rule" id="mwB8U" rel="mw:WikiLink" title="Single-subject rule">single-subject rule</a> for legislation, and a <b id="mwB8Y"><a href="./Single_subject_amendment" id="mwB8c" rel="mw:WikiLink" title="Single subject amendment">proposed constitutional amendment</a></b> would extend it to the federal government as well?