Washington DC - President Donald Trump said Friday he was revoking Joe Biden's security clearance, ending his predecessor's right to receive intelligence briefings after leaving office.

In a new series of rapid-fire power plays, the 78-year-old billionaire also froze aid to South Africa, where his top donor Elon Musk was born, and named himself head of the Kennedy Center.

"There is no need for Joe Biden to continue receiving access to classified information," Trump said on his Truth Social network.

"Therefore, we are immediately revoking Joe Biden's Security Clearances, and stopping his daily Intelligence Briefings."

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In a reference to the catchphrase of his former reality TV show The Apprentice, Trump added: "JOE, YOU'RE FIRED."

US presidents are traditionally given the right to receive intelligence briefings even after they step down.

Trump said he was making the move because Biden had removed his own security clearance after winning the 2020 election.

Biden at the time cited Trump's "erratic behavior" both before and after the January 6, 2021 attack on the US Capitol by protesters trying to overturn Trump's election loss.

In his post on Friday, Trump claimed that Biden "could not be trusted" with intelligence briefings because a special counsel's report into classified documents found at the Democrat's home found that Biden suffered from "poor memory."

Trump was also prosecuted for mishandling classified documents, but the Justice Department was forced to end the case after the Republican won the 2024 election.