There’s very few constitutional limits on the power to pardon. I suspect abusive use of the power would fall under the scope of impeachment, but we’d be unlikel

There’s very few constitutional limits on the power to pardon. I suspect abusive use of the power would fall under the scope of impeachment, but we’d be unlikely to ever see that play out. Pardons are also interesting because they have to be affirmatively accepted, and they have to be for an actual crime that was committed — so there is endless debate about whether accepting a pardon is an admission of guilt.