By Vanessa Miller, Special to the Globe Gazette Leaders from all three of Iowaâs public universities on Tuesday apologized to lawmakers for âegregiousâ incidents on their campuses that suppressed First Amendment rights and quelled free speech â largely affecting conservative students â and committed to taking corrective action. âSince October, weâve been reviewing what happened, how the process worked and didnât work, and weâre working to implement steps that will prevent this from happening again,â University of Iowa College of Dentistry Dean David Johnsen told the House Oversight Committee, while speaking about his decision in October to send a mass email to the college condemning a White House executive order barring certain types of diversity training.