Impeachment has no bearing on pardon power.

[TwilightZone]

Neither does conviction, for that matter. Once they're granted, that's it.

"A Congressional Research Service report covers presidential pardons and their relationship with Congress and impeachment. Both the CRS and Bowman noted that impeachment can be used against a president who abuses their pardon power. For example, if the president is taking bribes in exchange for pardons. But even in that case it doesn’t stop the pardon itself.

The CRS notes that even if the president is impeached and subsequently convicted for abusing their pardon power, the remedy would be limited to removal from office and disqualification from future office. So the individual president is removed from power, but their acts are not undone."

https://www.11alive.com/article/news/verify/verify-impeachment-does-not-undo-presidential-pardons/507-aaf8978e-5282-4147-ad47-65ca3b7d0458

Note: media bias check on 11 Alive for those unfamiliar with it:

https://mediabiasfactcheck.com/wxia-11alive-com/

[llashram]

1. no problem

they will screw up again and will be caught again. Once having gone to the cookie jar...

[getagrip_already]

2. Charge and prosecute them anyway.

Force them to admit their guilt in court and answer questions under oath. No free rides. Make them go full process.

[TwilightZone]

3. That's not how it works.

No prosecutor is going to charge someone for a crime for which they have received a pardon.

[getagrip_already]

4. apparently, it can work that way....

Pardons are just pieces of paper until you are charged, and then you have to present it in court and accept your guilt.

Now in practice most prosecutors won't press a case to that point. But in this case, it's warranted and could produce useful testimony. If someone refuses to cooperate, they could be jailed for contempt. If they lie under oath, well, that's perjury.

Someone in another thread posted a link to this process, which has been used.

I'm not a lawyer and I'm not playing one here, but others who are have posted it. With links.