Did LL unilaterally issue warrants forsurveillance?
Were they FISA warrants or otherwise?
FISA applies only to “foreign powers” and “agents of foreign powers.” Basically, this means that FISA is used to gather information about people who work for the governments of other countries. Investigators are typically not allowed to target U.S. citizens under FISA. In fact, if information about a U.S. citizen is accidentally discovered, the law requires those records to be destroyed.
But there are some notable exceptions. One is when the discovered information shows that there is a threat of death or serious harm to another person.
Another is that officials can wiretap U.S. citizens while they are overseas.
https://theconversation.com/3-questions-about-the-fisa-court-answered-91208
https://www.lawfareblog.com/how-fisa-court-really-works
https://thehill.com/opinion/white-house/425913-who-allowed-fisa-surveillance-abuse-new-attorney-general-must-find-out
https://www.fisc.uscourts.gov/sites/default/files/Correspondence%20Leahy-11-2013.pdf