George Santos — who is Catholic — insists he used to say he was 'Jew-ish' as a party joke. Now he says he's taken 4 DNA tests to prove his maternal grandparents are actually Jewish.

• George Santos told Piers Morgan he used to say he was "Jew-ish" as a party joke. 
• He also said he has taken four DNA tests to prove that his maternal grandparents are actually Jewish. 
• Santos claimed his grandparents fled Belgium in 1941 before falsifying documents to say they were born in Brazil. 

George Santos on Monday insisted he used to call himself "Jew-ish" as a party joke, even after conceding that he is actually Catholic.