We have Covert Monetary Financing (CMF) now.
Primary dealers take up all newly-issued Treasuries, and the Fed backstops primary dealers. Ergo, the Fed is *already* directly coordinating with fiscal all day, every day. 1/2
1) The federal government can run any deficit it likes simply by 'printing bonds'
2) The Fed is "involved in the process," standing by to ensure the bonds are all taken up
Covert financing via Treas-Fed coordination is reality