PORT-AU-PRINCE, Haiti (AP) — Not one suspect imprisoned in Haiti has faced trial after being charged in the killing of President Jovenel Moïse, who was gunned down at his home in the nation's capital nearly four years ago. Gang violence, death threats and a crumbling judicial system have stalled an ongoing investigation defined by outbursts and tense exchanges between suspects and judges. Jean is one of six Haitian judges investigating whether there is enough evidence to warrant a trial for the 20 suspects held in the troubled Caribbean country.