I'd just like to point out that interest rates are really unlike any other policy instrument. Compare them with other policy instruments (regulations, taxes, so

I'd just like to point out that interest rates are really unlike any other policy instrument. Compare them with other policy instruments (regulations, taxes, social programs, public works) and you'll see that they're more easily changed and create much less hassle among voters. Plus, they have a much more obvious impact in people's pockets and welfare, at least from the viewpoint of the voters.