BBC:
The host of 60 Minutes, Norah O'Donnell, asked Trump why he pardoned Zhao even though government prosecutors had said he caused "significant harm to US national security."
"Okay, are you ready? I don't know who he is," the president said.
Trump added that he did not recall meeting Zhao and had "no idea who he is", only that he had been told that the businessman was a victim of a "witch hunt" by the administration of former US President Joe Biden.
Can you imagine any other president saying this on TV to a reporter? Can you imagine if Biden or Obama had said anything of the sort?
'I don't know who he is,' says Trump after pardoning crypto tycoon
The president pardoned Changpeng Zhao, the co-founder of the world's largest crypto exchange, in October.