President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE slammed former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE's son Hunter Biden in a tweet Sunday morning, asking, "Where's Hunter?"

"He has totally disappeared!" he said. "Now looks like he has raided and scammed even more countries! Media is AWOL."

Where’s Hunter? He has totally disappeared! Now looks like he has raided and scammed even more countries! Media is AWOL. — Donald J. Trump (@realDonaldTrump) October 13, 2019

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The tweet came after Bloomberg reported early Sunday that Hunter Biden plans to step down from his position on a Chinese firm's board and refrain from working with foreign countries if his father is elected president in 2020.

Revelations that Trump asked Ukraine to look into the Bidens helped spark an impeachment inquiry into the president.

Trump and his aides have sought to portray Joe Biden as corrupt over his work as vice president to dismiss Ukrainian prosecutor Viktor Shokin, who was investigating an energy company where Hunter Biden sat on the board at the time.

Trump has also since requested that China investigate the Bidens.

China's foreign ministry, however, said that it had "no intention of intervening in the domestic affairs of the United States."