No, I don't think it's inevitable at all. In fact, monetary policy in the American context has been consistently very flexible. They have not bound themselves with a particularly narrow vision of inflation targeting. They've given themselves the flexibility to respond to circumstances as they arise. They've responded quite quickly in this current credit crunch, as they have in others.
I am hopeful they will not enter a recession, and their policy response from that side has been more appropriate than ours.