I think you missed the rather insightful point he was making entirely.
The DEA's use of NSA intercepts "sounds" a whole lot more sensible (catching 'drug dealers') than what may be potentially 1000s of other horrific uses the government is also using this data for.
It absolutely does not sound more sensible for the USG to be focusing the tools of foreign intelligence on its own citizens for drug enforcement. I didn't miss his point; his point is wrong. Using foreign intelligence for criminal justice does the opposite of legitimizing foreign intelligence programs.
The DEA's use of NSA intercepts "sounds" a whole lot more sensible (catching 'drug dealers') than what may be potentially 1000s of other horrific uses the government is also using this data for.