There are definitly American traditions to be honored. Past Presidents of the USA are given certain courtesies. People waging war on the USA are subject to other traditions.

An alarming double standard has emerged, after General Flynn was investigated for Logan Act violations for conducting his lawful duty as National Security Adviser during the transition of the Trump Administration, the DOJ won't investigate a former Obama administration official meeting with Iranian ambassadors and potentially undermining the agenda of the elected Trump administration.