My brother Jerome's excellent article on Trump's abuse of pardon power during impeachment process
Entitled, "Biden Must Clean Up the Trump Pardons," the gist is that the Constitution prohibts presidential pardons during an impeachment process because those acts are easily construed as buying-off jurors.
With the battle building over the filibuster, there’s another area that cries out for Senate reform: the impeachment process that led to the recent acquittal of Donald Trump.
No senator should be allowed to serve as a “juror” if they’ve benefited from a pardon issued by an impeached president. In this case 12 senators, including 10 Republicans, had sponsored Trump’s last round of pardons, creating the appearance of a conflict of interest and lack of impartiality.
Find the entire piece at Who.What.Why.