Either the NSA has some good shit on everyone in power, and/or everyone in power values convenience over the interests of the people.
That's all you've got? You can't think of not only more possibilities, but better ones? How about: Incoming Presidents quickly come to the realization that they grossly underestimated the threat to the country once they receive full intelligence briefings and realize that their campaign stance in some cases was based on a fundamental misunderstanding of the situation. That seem more likely than the nonsense false choice you offered.