Earlier quoted context omitted.
The President's pardon power is enumerated in the Constitution and has been litigated extensively. https://constitution.congress.gov/browse/essay/artII-S2-C1-3...
Which ultimately doesn't matter. If the president tries to do something, and no court actually stops him, then it doesn't matter whether or not it's in the Constitution, whether or not it's written down in law, or whether or not it has been litigated in the past. He tried to do it, nobody stopped him, therefore he can do it. We are finding out in real time that the president can actually do a lot of things, simply be…
I'm not saying that that could never happen, but a) it sure sounds like an uphill battle and b) it's not the same thing as the president (one person) doing whatever they feel like regardless of the law.