Donald Trump has long had an enemies list. It is a strategy that President Donald Trump has deployed throughout his life, as instinctive and natural to him as the act of breathing: Villainize whoever is blocking his way. (From the Atlantic)
March 2018: Former Vice President Joe Biden said he would “beat the hell out of” President Donald Trump if they were in high school over his crude comments about women.
Biden threatened him and from that point forward Biden was on his enemies list. Heighten after Biden annonced he was running for President. At one point Biden trailed Bernie Sanders and Elizabeth Warren and yet the Presidents focus was Biden. This intense focus on Biden resulted in impeachment.
Biden, shouldnt expect any cooperation from the Trump Administration. Until he has exhausted all over his legal challenges.