This is an underappreciated concern regarding spy agencies. What difference do laws that prohibit domestic surveillance make if spy agencies can just enter rec

This is an underappreciated concern regarding spy agencies. What difference do laws that prohibit domestic surveillance make if spy agencies can just enter reciprocal agreements to share data? If you're running an agency in the US that can't spy on Americans, you can make a deal with a similarly bound agency in the UK - they get your UK data, you get their US data, and you have all the US data you want even if you didn't collect it.