In case of client trades, it may need to be recognised that a bankclient relationship is a much broader one and could include a credit relationship as well. Provision of a facility-wise collateralisation may work  7  (iii)    Operationally, collateralisation is effective only if the exposure is calculated frequently and there is a mechanism to exchange collateral dynamically.
It is not the Federal Reserve’s job to pave the yield curve with guaranteed returns for any sector of the economy, and we should not be guaranteeing a return for Wall Street or any special interest groups.