A man accused of plotting to attack the U.S. Capitol called a television station from jail and said if he hadn’t been arrested, he would have gone to Washington and shot President Barack Obama in the head. WXIX-TV in Cincinnati said Christopher Lee Cornell called it from the Kentucky jail where he’s being held, confessed to being a supporter of the Islamic State group and said he planned to kill government officials in retaliation for U.S. strikes on the militant organization. […] Cornell, asked by the interviewer what he would have done had he not been arrested in January, said...