FIRST ON FOX: Arizona's education department is pushing back against the U.S. Department of Education's (DOE) threat to shut down Grand Canyon University, calling it "the latest episode of harassment" against the school by the federal government."It is unwarranted and unjust," Arizona state Superintendent Tom Horne told Fox News Digital Friday. "In the U.S., anyone accused of wrongdoing is presumed innocent and entitled to their day in court. Secretary Cardona’s threat is contrary to those constitutional guarantees and unworthy of his position."Horne said he wrote to DOE Secretary Miguel Cardona last year about GCU's "excellent" reputation and urged him to