The offenses were not against the United States. This man is in a Colorado prison for crimes under Colorado law. The President has no authority in this case.
The Colorado governor may pardon any Colorado conviction other than those for treason or impeachment. The entire point of this thread is that the governors are culpable for the injustice of the system. Their opinions don't absolve them of that.
The comment I responded to said "And mass pardons of federal prison could hint the governors about their power too.". This suggests two mistaken beliefs:
1) That governors as a whole have these powers.
2) That "hints about their power" would prompt them to act in the manner he wishes.
The governors don't need hints about their power in this area, they are well aware of it. They don't fail to exercise it as he wants them to because they need a "hint", they fail to exercise it as he wants them to because they do not agree with him.
I'm not addressing the thread as a whole. I'm addressing this little corner of it. I'm under no obligation to address the thread as a whole in every comment I make, and doing so would be both pointless and tiring.