All you really know is what you,ve been told the Constitution says. Why do you think it is so important to keep stating that Trump can't? If he couldn't, there would be no need to insist.
Patience, surely you can get some of your "more studied" buddies to say precedent is irrelevant here or state that it has never happened before. After being insulted by many numerous times, i'm entitled to nail them.
Use this time to dig a little for yourself! There are only thousands of pardons to look through but, it won't take that long. Maybe you can learn that CNN CAN'T be trusted.