Prove it. Undone by the president? Has already been done. It may simply be a long held belief. The same norms Trump has pissed all over for four years.
Once a crime has been pardoned and “accepted” the crime is literally “gone”. It can’t be overturned by anyone, congress, SCOTUS, Biden etc.
The Constitution gives Biden the right to do whatever he wants. https://www.washingtonpost.com/poli...stitution-gives-him-right-do-whatever-i-want/
You guys like to chide your opposition for grasping at straws and wild conspiracies.... don’t become that which you despise.