The last defendant in an extended family charged with conspiring to export U.S. defense technology to China reached a plea deal that brought the case to an abrupt end, authorities said Wednesday. Rebecca Laiwah Chiu, 63, reached the deal with federal prosecutors late Tuesday on the eve of her trial on charges of conspiracy to export defense articles, failure to register as a foreign agent and making false statements to the FBI. Chiu instead pleaded guilty to one count of acting as a foreign agent without registering with the U.S. government and will serve three years in prison, said her...