Money supply (as it is), in terms of current law and practice, involves central bank decisions on short term interest rates and ratios of reserves and capital required to keep banks that serve the public financially strong. These decisions affect prices, employment, liquidity, economic growth and interest costs and earnings. Stable prices, full employment, sustainable growth and favorable security effects are the goals of central banks.
Money supply (as it should be), in terms of reform proposals by those who would change current law and practice, may involve ideas to make money less vulnerable to inflation and/or to make money promote full employment, prosperity, security and economic democracy.
The category includes money supply (as it is) and money supply (as it should be).