JTA - Far-right pundit Tucker Carlson insists Israelis undergo genetic testing to determine if they have a rightful claim to the Jewish state. https://www.jpost.com/diaspora/antisemitism/article-888178

Tucker Carlson pushes DNA tests for Jews, ‘Khazar’ theory | The Jerusalem Post
The largely discredited theory states that Ashkenazi Jews are genetically descended from a Turkic minority that converted to Judaism in the Middle Ages rather than from the 12 tribes of Israel.