The two had a contentious relationship when Trump was still president. Back in 2020, Biden called Trump "the first racist president" and suggested that "the way he deals with people based on the color of their skin" was why he had so much support from white supremacists. Biden, however, walked back those comments after he took office in 2021.
When asked to comment on Trump's indictment on charges related to the payment of hush money to adult film star Stormy Daniels, Biden said he would "not" comment.