Answer:
the Fed does not control the amount of money that households choose to hold as deposits in banks.
Explanation:
In simple words, the federal government cannot completely control the amount of money that the households choose to deposit in bank. Although change in interest rates can be used to control such deposits but the overall tendency of savings is unaffected by minor changes in interest rates. This is seen as a core issue as to why the federal government is not able to completely control the money supply in the market.