Some of the events he's anchored breaking coverage of include the Scotland independence vote, 2013 government shutdown, Boston Marathon bombing, Japanese earthquake and tsunami, NATO's attack in Libya, and the Arab Spring and Egypt’s revolution. Lui's field reporting has included covering the Ferguson unrest, Hurricane Sandy, and the 2012 U.S. Presidential election. For the election, his reports have ranged from the implications of the Tea Party movement to presidential election night exit poll data. In an NBC News investigation, Lui reported on a phenomenon involving high-volume brothels in the U.S. where women are forced to have sex 100 times a day.