The interception side will not need a telco database, any telco legal oversight, any staff at a telco understanding what cell users are of interest to law enforcement officials. No telco costs to a city or state, no other staff or teams to see the legal requests in advance or databases been set up to log users.
Has the US gov found leaks in the way local or national telcos log or store details about users under legal court surveillance?
No comment about discovery to a legal team before or during trial. A vast local and federal database can be constructed of calls, voice prints, locations, text and transcripts.
The published or in public court telecommunications providers assistance to law enforcement officials stats and costs look the same every year.