What happens if CIA was actively involved in domestic targeting and surv of US person(s) [direct _indirect]?

How does one agency attach itself to another?

https://www.cia.gov/news-information/featured-story-archive/2018-featured-story-archive/top-10-cia-myths.html

"the CIA is restricted in the collection of intelligence information directed against US citizens. Collection is allowed only for an authorized intelligence purpose; for example, if there is a reason to believe that an individual is involved in espionage or international terrorist activities. The CIA's procedures require senior approval for any such collection that is allowed, and, depending on the collection technique employed, the sanction of the Director of National Intelligence and Attorney General may be required."

Look here: FBI

Look here: DOJ

DO NOT LOOK HERE: CIA

Q