BUSINESS VIEWS: "The Case for a Global Central Bank: With world finance increasingly intertwined, we'll need one sooner or later," by Jeffrey E. Garten, BusinessWeek, 28 September 2009.
Not a great article, but Garten is always good enough.
First he lists all the global panics since the Latin American debt crises of the 1980s, noting that each time the great powers pledged to develop a new financial architecture and then didn't. As a result, each crisis is "worse than the last" and more globally synchronized.
Honestly, you can blow that last sentence off as being both true and irrelevant to the larger reality of globalization's rapid spread across that timeframe. Frontier integration is--by definition--a time of booms and busts.
Better point:
At the heart of this reality is a simple fact: Governmental oversight remains national, while financial institutions are more globally intertwined.
So all that additional money, traveling at high velocity around the planet, can spread contagion.
The G-20, he says, is chasing the right target--the rebalancing, but the collective responses to the emergent global biz cycle are too slow.
So why a central bank?
It would be the place where all the various regulatory approaches met (something the G-20 seems to want to send the IMF's way).
It would be the guardian against players capable of generating systemic risk--the global behemoths. He says there are about two dozen such big firms today.
Third, it would set debt-to-equity ratios.
Finally, it could run crisis simulations and have them be treated as definitive--and thus serve as a crystal ball to future dangers.
I see all this ambition in Obama's "framework" for the G-20--just not the willingness to create the global central bank. Instead, everybody, under peer pressure, will set their own goals and then be called out if they don't meet them.
Gotta crawl, then we walk.