As an abstract proposition, I don't care about pax americana; I would not have sacrificed hundreds of thousands of American lives in WWI, Korea, Vietnam and other lower cost ventures. The cold war was an ultimate outgrowth of the failed internationalist policies of Woodrow Wilson; Truman could have ordered the eighth army to march down the autobahn to Berlin in 1948 and and avoided the whole thing. Hitler and WWII were an outgrowth of Wilson's policy errors in initiating our involvement in WWI.
The constitution as a religious document? It ought to operate as a contract among the assembled states setting forth the terms on which we are assembled. The flow of circumstances may well have exactly that result. There is a widening gap among the priorities of the various states to which some are likely to wake up in the not far distant future.
The defense of Maryland required invasion of constitutional rights only because Lincoln started the war in the first place. Sure, in the event of attack by foreign enemy we may need to override in the interest of national security--I view Lincoln's abrogation of the Constitution to be far broader than necessary.
The money system? I don't see any real need for any national (or state for that matter) money system not tied directly (as opposed to through a resrve ratio system) to a specie value. To the contrary, our existing system is a continuing threat to the existence of the republic.