Pence takes swipe at Trump as he launches campaign, two killed at graduation shooting and more top headlines

ENTERING THE ARENA - Pence takes shot at Trump as he enters increasingly crowded Republican primary field. CAMPUS CHAOS - Two killed, several injured as gunfire breaks out after high school graduation, suspect in custody. TOP TARGETS - SPLC adds parents' rights groups to'Hate and Extremism' annual report. FAMILY MEN - America's men are poised to transform this nation for the better -- if we let them, writes Sen. Josh Hawley. BANKING ON IT - Industry responds to CFPB's warning on AI chatbots.