Joe Biden tore into an Iowa voter who claimed he sent his son Hunter to work in Ukraine, calling him a 'damn liar' and challenging him to a push-up contest

Associated Press

• In a heated Thursday exchange on the campaign trail, former Vice President Joe Biden called an Iowa voter a "damn liar" for claiming Biden sent his son Hunter to work in Ukraine.
• "You said I set up my son to work at an oil company, isn't that what you said? Get your words straight, jack," Biden sharply told the voter, adding, "I'm not going to get in an argument with you."
• In response to concerns over his age, Biden who just turned 77, added: "You want to check my shape? Let's do push-ups man, let's run, let's take an IQ test" to resounding applause. 
• Hunter Biden's work in Ukraine serving on the board of oil and gas company Burisma Holdings is currently at the center of the ongoing impeachment proceedings into President Donald Trump. 
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In a heated Thursday exchange on the campaign trail, former Vice President Joe Biden called an Iowa voter a "damn liar" for claiming Biden sent his son Hunter to work in Ukraine and challenged him to a push-up contest.

At an event in New Hampton, a voter asserted that Biden "sent his son over there to work for a gas company even though he had no experience with gas or nothing," further accusing him of "selling access to the president," presumably referring to former President Barack Obama. 

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SEE ALSO: The life of Hunter Biden: How Joe Biden's middle child landed in Trump's impeachment inquiry and a paternity scandal of his own