That’s not what that means. See [1] - “States will define as political crimes any behaviour perceived as a threat, real or imagined, to the state's survival, including both violent and non-violent oppositional crimes”
As in it’s political not because of party politics, but because it’s threatened the power of politically powerful people and agencies in the US establishment.
Which political party is persecuting him this time?
Remember when one side pushed for charges and the other side pardoned him? No neither do I.