Obama undermined Bush and met with Iraqis before he was even elected. McCain routinely meets with opponents of Trump overseas. Pelosi met with foreign leaders to hurt bush.
Logan act is a dead letter. And i do not believe anyone has ever been prosecuted under it all the way back to colonial days.
We can all trot out the hypocrisy and dirty dealings of lots of pols.
But again, that aint gonna get you any sympathy in front of Flynns judge.