pardon
Yes, a governor has the power to pardon someone, which means they can forgive or excuse a person convicted of a crime and release them from punishment.
alibi
alibi
DEFENSE
The president can grant clemency to someone convicted of a crime. Clemency can mean the sentence is either shortened or waived for that person. As for compensation for wrongful imprisonment, the president does not give any compensation. Once out of prison, the convicted can sue for compensation, but the president has nothing to do with that.
an excuse for something or a crime
Blame the dog.
Not to a court, possibly to a jury.
...as a kind or merciful treatment, moderating the punishment of someone who has committed a crime or transgressed a law or rule.
Usually right before they vacate the office.
a pardon(like in a general pardon) or amnesty
The question is extremely unclear. . . BUT - - "Ignorance of the law is no excuse!"