We have every right to audit the information flowing over our borders from foreign persons, just as we have every right to inspect shipments arriving in our ports. That's part of the concept of sovereignty.
This past election, our sovereignty was unambiguously, overtly threatened by a foreign power - and we will be suffering the consequences for this for years to come. But one of the tools we had to stop this - and one of the reasons we know anything about this at all - is foreign surveillance.
The stakes are very high, but many are inexplicably arguing that we should just stop foreign intelligence gathering if there's any chance at all a domestic person gets caught up on one end of the conversation.