Donald Trump has berated an Australian journalist for asking about his business interests. Photo: AP PHOTO

The national broadcaster is standing by one of its most senior reporters after the US president threatened to dob him in to the Australian prime minister.

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In a fiery exchange about his business dealings, Donald Trump told the ABC's Americas editor he was "hurting Australia very much".

"Your leader is coming over to see me very soon," Mr Trump told reporter John Lyons.

"I'm going to tell him about you. You set a very bad tone."

The president's remarks appear to confirm he wil

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