For the purposes of this debate, a Federal Reserve-driven bailout refers to a bailout of financial institutions that is primarily initiated, financed, and implemented, through the tools of the Federal Reserve (e.g. monetary policy, Federal Deposit Insurance Corporation, etc.).
On the other hand, a legislature-driven bailout refers to a bailout of financial institutions that is primarily initiated, financed, and implemented, through the tools of the legislative branch (e.g. fiscal policy, stimulus packages, etc.).