Trump urges Biden to 'hang it up'; Biden says attacks 'won't work'

US President Donald Trump lashed out at Democrat Joe Biden on Sunday, strongly suggesting on Twitter that he and his family were corrupt and saying the former vice president should "hang it up."
In an op-ed article in The Washington Post, Biden said Trump was "frantically pushing flat-out lies, debunked conspiracy theories and smears against me and my family, no doubt hoping to undermine my candidacy."
"I will put the integrity of my whole career in public service to this nation up against Trump's lack of integrity any day."