Biden has been outspoken in attacking some of the pardons his predecessor issued during his first term in office.
In 2019, Biden attacked Trump for pardoning two US army officers – one of whom had been convicted and one who was set to stand trial – for war crimes in Afghanistan.
Biden said the then-president had betrayed “the rule of law, the values that make our country exceptional and the men and women who wear the uniform honourably”.
Later, in 2020, when Trump commuted the sentence of his informal adviser Roger Stone, Biden called his rival “the most corrupt president in modern American history”.
More broadly, during his 2020 campaign, Biden accused Trump of undermining the office of the attorney general and politicising the office.
“The attorney general is not the president’s lawyer. It’s the people’s lawyer,” Biden said. “We never saw anything like the prostitution of that office like we see it today.”