Good scoop by reporters with the Organized Crime and Corruption Reporting Project (OCCRP), who confirmed that Sergio Gor, the director of the White House Office of Presidential Personnel, was born in the former Soviet Union, specifically in Tashkent, Uzbekistan. Gor prompted speculation about his origins when he declined to say where he was born, saying only that it was not in Russia.
https://www.occrp.org/en/news/exclusive-top-trump-advisor-sergio-gor-was-born-in-the-soviet-union