Federal courts can,and do,reverse convictions handed down in state courts so one might expect that the Federal Executive,the President,can *pardon* such people.The reverse,however,clearly isn't true...a Governor cannot pardon someone convicted in a Federal court.I suppose I could be wrong...I'm certainly not a lawyer.I didn't even stay in a Holiday Inn last night.
A presidential pardon applies only to federal crimes. A person convicted of a state crime cannot be pardoned by the President. Similarly, the holder of a presidential pardon can still be tried and convicted of a state crime.