[WorldMaker]

Moon shot. Arguably the right mix of political PR (charismatic leadership, cohesive message) and some sense of large enough external threat. Climate change is already right there as not just a huge external threat, but an existential threat. Politicians have just yet to mobilize the American political machinery necessary to properly react to it. A few good speeches from the right leader could do magic, at least so history tells us.

(It may not be possible in the age of Fox News to rally enough people to the smart causes. But the treasons of that Australian institution against the World are still left to be prosecuted.)