Why Is Obama’s Agriculture Department blocking school integration?

Iowa City just joined a growing number of school districts in trying to promote student academic achievement by giving all pupils a chance to attend good, economically diverse schools. The policy is a big step forward, as it is backed by a half-century of research suggesting that students do much better when they attend schools with a mix of middle-class and low-income students as opposed to schools with high concentrations of poverty. But the good news was tempered by a potential legal cloud imposed by the Obama administration’s Agriculture Department.