Wait... what? Who is this Michele Bachmann person and why don't she understand what 'global economy' means? Politicians confuse me sometimes.
I imagine (best as I can) that things are scary, right now, in a country that needs a new constitution. Zimbabwe has been through a lot, and it's hard to trust those who are making the new document... I doubt they have a significant number of constitutional scholars working on it. Is it a liberal American bias to demand experts be involved in decision making?
I imagine that, upon doing further research, Google discovered that you can't throw money at a problem to fix it. Also, they have less power than they think they do (I'm looking at you, Google China).
While a monetary basket might be a better standard than the dollar, any attempt to make such a basket would be highly political rather than economic in nature. Countries will likely continue making their own decisions in determining currency standards rather than deferring their sovereignty. Though, I suppose, the international lending agencies could make it a requirement of aid.