But were the FISA warrants actually cover for the warrantless spying that had been happening?
More suspicious: Was Carter Page an FBI asset? It appears he was, from 2013 onward, at the very least a cooperating informant the FBI used to trap Russian spies. In which case, the Title I warrants FBI obtained against him could very well have been established by a known history the FBI was at least partially responsible for, not as a Russian spy, but as a counterintelligence asset of the FBI.
At that point, the FBI's fraud upon the FISA Court goes from being a serious crime equivalent to perjury to being a very broad-based seditious conspiracy, since everyone in Co-Intel FBI and NatSec Justice, would have known they were falsely claiming their own asset was a "spy" in order to get blanket surveillance over the Trump campaign, later on the President elect, and later still the President himself.