Former President Joe Biden's pre-emptive pardon for retired Gen. Mark Milley, the former chairman of the Joint Chiefs of Staff, will give the retired military official a shield against any action that President Donald Trump might take against him amid their highly public feud.

President Biden noted that the "should not be mistaken as an acknowledgment that any individual engaged in any wrongdoing."

The decision comes after Trump warned of an enemies list of those who have crossed him politically or sought to hold him accountable for his attempt to overturn his 2020 election loss.