Let me first simplify. You are saying that the goal of our founders was to protect those without power from the powerfull.
I present this science fiction response-
SETI bears fruit. The news is not good. The only extraterristral race ever discovered is found to be xenophobic beyond even our standards. We can expect an attack at any time.
Should we allow the luxury of personal freedoms if they conflict with the defense effort? Do we continue the support of nonproductive citizens? (This would have to include the retired.) Does the separation of church and state really matter?
Wouldn't a fascist type government be more suited to dealing with this?
If you agree, then the best government is obviously the one that best deals with outside threats to it's people, not the one that coddles it's citizens.