"Lock up the Bidens. Lock up Hillary," Trump declared at a rally in Macon, Georgia, stoking the crowd that chanted "lock him up" in favor of the Democratic candidate's imprisonment.

"We've learned over the last couple of months: Joe Biden is a corrupt politician," Trump said to his supporters, "and the Biden family is a criminal enterprise."

Trump frequently demanded that his 2016 Democratic opponent, Hillary Clinton, be incarcerated over her use of a private email server as secretary of state. It was believed to be the first time he has ever used that sort of attack against the Bidens.

The FBI declined in 2016 to recommend charges against Clinton for sending a small number of classified emails through a private server at her New York home.