Foreign policy should work to advance a constructive agenda—something that’s been largely lacking in the Obama era. Hopefully, the next president will come up with appropriate actions to fill that void. As a cornerstone of that effort, I would suggest a commitment to promoting free trade and more liberal markets worldwide. I’ve written before that the next president will need a “kick starter” agenda—one that demonstrates that the United States is back in the business of protecting its own interests. But Washington will need to go beyond that. The static defense of interests is a sterile and ultimately, unsatisfactory role...