Trump's Judge Sister Gets Threatening Letter FBI probing threat to federal appeals court judge By Rob Quinn, Newser Staff Posted Mar 21, 2016 1:16 AM CDT 137 comments Comments Judge Maryanne Trump Barry is seen in a Federal Judicial Center training video. (YouTube) (Newser) – Donald Trump's older sister, a widely respected federal appeals court judge, has become the latest Trump to receive a threatening letter. Sources tell CBS Philly and NBC News that Judge Maryanne Trump Barry, who sits on the US Court of Appeals for the 3rd Circuit, received the letter in Philadelphia on Friday. The sources say that unlike the letter received by Trump's son Eric on Thursday, the letter sent to the 78-year-old judge did not contain white powder, though it apparently contained a similar demand for Trump to drop out of the GOP race. The FBI says it is "aware of the incident and is working closely with the United States Secret Service and US Marshals Service," the AP reports. Trump Barry—who was appointed by Ronald Reagan and promoted by Bill Clinton—is a "moderate-conservative Republican centrist," legal blogger Matthew Stiegler told the Washington Post when it profiled her earlier this month. She has not played an active role in the Trump campaign, though Ted Cruz denounced her as a "radical pro-abortion extremist" last month when Trump joked that he would consider appointing her to the Supreme Court.