If someone calls another country where they have no reason to expect that country won’t spy on their call, maybe.
Or a conversation in another country about someone here.
Someone who calls in the US to a number in the US, even if the call is routed outside the country, would be protected though.
I don’t believe that to be true.
My understanding is that if 50% of your household is not a US citizen, you will still be monitored. That means US Permanent Residents will be included, even if that is your husband or wife, which means you as a US citizen will be continually monitored, too.