In case of impeachment, they can kiss their pardons goodbye.
Just little crack in the dam. Nothing to worry about.
That assumes he's actually removed, which is highly unlikely.
Until he's removed, he can issue pardons, except in the case of individuals who themselves have been impeached. That's a pretty tiny class of persons.
As for the little people, such as Lois Lerner, he can pardon until he's red in his gray face.
But there are littler people than Lois Lerner, who threaten to escape Presidential notice. These cretins should live in fear of a Republican DOJ bent on destroying their lives for their dedication to Progress!