[McGavin999]

Can someone please explain to me why a warrant to listen in on Carter Page ended up allowing them to listen in on General Flynn and AG Sessions and possibly President Trump himself?

[Cboldt]

The type of warrant obtained against Page allows the government to sweep in everything from everybody the target talks too, then "minimize" it. The "probable cause" to get a FISA Titke I warrant is that Page is a foreign agent, that he is literally working for a foreign government. Title I surveillance is aimed at learning who all is in the ring.

"Minimizing" is the flip side or inverse of "unmasking."

The NSA has 100% of electronic communication. The NSA responds to inquiries, and "masks" or "minimizes" the reports it sends to the FBI. Basically cutting out chats with Pizza Hut.

[Pearls Before Swine]

I think the explanation is Title 1 vs Title 7...The fine print. Title 1 appears to confer wider powers...ability to track contacts and contacts of contacts. Not certain, but it makes sense.

[expat2]

Title I warrant allows the Feds to surveil anyone the main target talks to, and those who talk to that secondary person, et ad finitum.