No, but if somebody like the NSA comes along with a request to intercept a specific package, or even a bunch of packages then customs will gladly turn them over. As was posted elsewhere in this thread, NSA has been known to do this in targeted cases and installed software into routers etc. before returning them to customs for delivery.
So it truly depends on whether an organization like the NSA has you on their radar.
Who do you think customs are? All they care about is import duty and illegal substances.
No, but if somebody like the NSA comes along with a request to intercept a specific package, or even a bunch of packages then customs will gladly turn them over. As was posted elsewhere in this thread, NSA has been known to do this in targeted cases and installed software into routers etc. before returning them to customs for delivery.
So it truly depends on whether an organization like the NSA has you on their radar.