DES MOINES — After heated debate that stretched beyond the bill at hand to issues of tenure, incidents of censorship, political polarization on college campuses, and former President Donald Trump’s policies and practices — a free speech bill banning certain types of diversity training across Iowa’s public universities and K-12 schools passed the full Senate on Monday. The bill bakes into Iowa Code free-speech proposals by and for the state Board of Regents, while also enshrining into law language from a White House executive order in the fall banning publicly funded institutions from using diversity training involving race or sex “stereotyping” or “scapegoating.”