Trump placed secret service people that were obvious MAGA stooges, that mocked Obama and his wife and were disrespectful to his daughters. Obama suspected Trump was doing something worse than cancelling his security detail, he was putting secret service officers that would stand by and let Obama be assassinated, because thats what Trump suspected of his near assassination, in 2024. Obama didnt want to be controversial in claiming he was at peril, so he just left the States for safe Haven in Sydney.