The chance that Trump wasn't wiretapped is close to zero.   Probably all of the Presidential candidates were subject to wiretaps.

I doubt there were any "orders" written for wiretaps on these people (or in other similar situations).   They were just quietly done.

Anyone who thinks I'm nuts just needs to look at the CIA Wikileaks dossier for an idea of the cowboy culture that prevails inside the CIA.   Who needs enemies when this is your security and intelligence agency?