Federal prosecutors on Tuesday charged a Cornell University student for allegedly making online threats against Jewish students at the Ivy League school over the weekend. The arrest follows warnings by officials to a congressional hearing on Tuesday about increased hate directed at Jewish students in the U.S. during the Israeli-Palestinian conflict in Gaza. The U.S. government and advocacy groups have reported increased threats against Jews, Muslims and Arab Americans since fighting broke out in Gaza. A federal complaint identified the Cornell suspect as Patrick Dai, 21, charging him with posting threats to kill or injure another person using interstate communications....