Under the Constitution, only federal criminal convictions, such as those adjudicated in the United States District Courts, may be pardoned by the President. In addition, the President's pardon power extends to convictions adjudicated in the Superior Court of the District of Columbia and military court-martial proceedings. However, the President cannot pardon a state criminal offense.
Mumia was convicted in state court, so Obama has no jurisdiction.
I stand corrected. Thx!
That is precisely what I explained. I believe I even quoted the relevant section of the Constitution.