“We’re going backwards,” says Steve St. Juliana, whose 14-year-old daughter, Hana, was killed in a school shooting four years ago, along with three other students. “Changes that have been made at [the] legislative level, trying to add more mental health support, more gun control. It's all being reversed.” Hana was killed by a 15-year-old student at Oxford High School, about 40 miles north of Detroit. The shooter was armed with a 9-millimeter handgun. A private investigation of the shooting calle