How about this little suggestion:
Anybody remember the supernuke the Soviets had that was connected to sensors around the USSR and would detonate if they picked up unusual amounts of radiation? Why don't we take that bomb and put it into a time capsule set to explode upon opening. We keep the information on the QT, like only telling conservative presidents what is really in the capsule. If there is still a conservative ex-president left alive in 50-100 years (or even an active-duty president) he will deactivate the bomb before the opening. If we have become so liberal that no conservative ex-presidents are still around the secret will die. When the anti-nuke, dirt-worshipping, bunny-hugging, pinko, gun-grabbing, bull-dyke, femnazi, ultra-liberal, do-it-for-the-children!, anti-freedom, pro-conformity, socialists open it they will be in for a big surprise!!
[}:D]