I do not see how spying on a campaign is “treason”. Illegal, yes, but treason?
Trump plays semantics.....
What are the media going to say..... “well this is certainly not treason, sedition maybe, but not treason.”
They have used the term to describe Trump. All the way back in 2016 and there are lots of articles online that say the same.
https://www.nbcnews.com/news/us-news/did-donald-trump-commit-treason-n618941