Joe Biden pardoned his siblings and their spouses on his way out of the White House, saying Monday that his family had been “subjected to unrelenting attacks and threats, motivated solely by a desire to hurt me — the worst kind of partisan politics.

President Joe Biden pardoned his family members, including his businessman brother James and political adviser sister Valerie, in his final moments in office before Donald Trump returned to power. Biden justified his preemptive pardons,

Mr. Biden emphasized that he did not believe his family did anything wrong, but he feared political attacks by Donald J. Trump.