Washington CNN  —  For decades, the US Department of Justice has used a tool to sniff out former Nazis who lied their way into becoming American citizens: a law that allowed the department to denaturalize, or strip, citizenship from criminals who falsified their records or hid their illicit pasts. That power, under the new Trump administration, may be broadening. According to a memo issued by the Justice Department last month, attorneys should aim their denaturalization work to target a much