It's the cost of being a global superpower together with open borders. If you seriously want to reduce surveillance at least one of these must be changed, but

It's the cost of being a global superpower together with open borders. If you seriously want to reduce surveillance at least one of these must be changed, but probably both. However both are politically impossible to change for any party. The democrats and republicans act and sound the same because of issues of national security. If the US where to go into isolation mode it could drastically reduce it's threat level against it. However of course isolation would lead to other problems (similar to the one prior to WW2) However I believe that these changes will not come as a change of policy from either party, rather through a huge crisis and a downfall of the US political system. The UK has a similar problem as a regional power. Edit: Added extra paragraph.