Barr appeared in Chica­go for a news con­fer­ence along­side oth­er fed­er­al law enforce­ment offi­cials to tout the impact of Oper­a­tion Leg­end, an ini­tia­tive to crack down on vio­lent crime through surges of fed­er­al agents in var­i­ous U.S. cities. Repub­li­can Pres­i­dent Don­ald Trump has made “law and order” a theme of his cam­paign for re-elec­tion on Nov. 3. “Oper­a­tion Legend’s suc­cess is per­haps most dra­mat­ic here in Chica­go,” said Barr, a Trump appointee.