Collusion is the descriptive word the news media has settled on to cover many potential illegal actions by the Trump campaign, which could range from aiding and abetting (18 USC 2) to conspiracy per se (18 USC 371) to conspiring to violate several potentially applicable laws like: 18 USC 1030—fraud and related activity in connection with computers; 18 USC 1343—wire fraud; or 52 USC 30121—contributions and donations by foreign nationals. Also, 18 USC 2381—for, contrary to a widespread belief that there must be a declared war, the Justice Department as recently
as 2006 indicted for “aid and comfort” to our enemies, the form of collusion better known as treason. Collusion is the perfect word to cover such crimes, pejorative and inclusive.
http://www.politico.com/magazine/story/2017/07/12/what-is-collusion-215366