What do we talk about when we talk about the frontier? For more than a century, Americans haven’t been able to avoid using that term to describe our society’s past, present, and future. It may be time to find a better one. A new concep­tual frame is needed to examine the political, social, and economic logic of the periodic upheavals in American life that result from these dynam­ics. We might call this process filibusterism, after its protagonists…