WASHINGTON (AP) - John Roberts is an appeals court judge with a multimillion-dollar portfolio, a spouse who is a successful lawyer and a broad roster of clients from his days in private practice. Those all mean he probably will have to disqualify himself from dozens of Supreme Court cases should he become chief justice. It is an situation that, while not unusual, would leave the nine-member court with a potential for tie votes. Roberts, whose confirmation hearings are to begin Monday, can minimize his problems. For example, he could put his money in mutual funds or other types of investments....