US President Donald Trump on Sunday said his administration was examining U.S. Treasury debt payments for possible fraud and suggested that the country's US$36 trillion (HK$280.8 trillion) debt load might not be that high.

Speaking to reporters aboard Air Force One, Trump said administration officials who have been combing through payment records in an effort to identify wasteful spending have turned their attention to the debt payments that play a central role in the global financial system.

"We're even looking at Treasuries," Trump said. "There could be a problem - you've been reading about that, with Treasuries and that could be an interesting problem."

He added: "It could be that a lot of those things don't count. In other words, that some of that stuff that we're finding is very fraudulent, therefore maybe we have less debt than we thought."