spoke Vietnamese
... that when students spoke Vietnamese in a graduation speech in Louisiana, the school district proposed banning all non-English languages?
... that when students <b id="mwVQ"><a href="./Vietnamese_language_in_the_United_States" id="mwVg" rel="mw:WikiLink" title="Vietnamese language in the United States">spoke Vietnamese</a></b> in a graduation speech in <a href="./Louisiana" id="mwVw" rel="mw:WikiLink" title="Louisiana">Louisiana</a>, the school district proposed banning all non-English languages?