Expert on Lawrence O'Donnell says no reason Trump can't pardon the entire group of insurrectionists.

[pnwmom]

40. What makes you the Constitutional law expert?

Legal experts disagree, especially when the people a President pardons were involved in his impeachable offense.

https://www.washingtonpost.com/politics/2021/01/13/no-trump-cant-pardon-himself-impeachment-would-strip-him-that-power/

No, Trump can’t pardon himself or other insurrectionists. Impeachment would strip him of that power.

Congress can affirm what “except in cases of impeachment” means.

Reports indicate that President Trump is considering pardoning both himself and others related to the insurrection at the Capitol. At the same time, the House is rapidly moving forward with impeaching Trump for his role. The most coherent constitutional understanding suggests that if the House votes to impeach Trump — even before the Senate begins its trial — he is then barred from issuing a pardon either for himself or those related to the impeachment charges. Congress — not the Supreme Court — can move to decide on whether the president can pardon himself or others directly connected to the high crimes for which he is impeached.

Corey Brettschneider is a professor of political science at Brown University and the author of “The Oath and the Office: A Guide To The Constitution For Future Presidents.” He is also the editor of “On Impeachment: The Presidency On Trial.”

Jeffery K. Tulis is a professor of government at the University of Texas at Austin and the author of “The Rhetorical Presidency.”