It appears that you have no understanding on what a fed balance sheet is?
If they have nothing to do with the mortgage rates why do 1/4 of all mortgage backed securities in existence still sit on their balance sheet?
They drive rates down. The treasury has no ability to do that. Nor can the treasury create money from thin air.
I had to go recheck my post to see where I said that the Fed has nothing to do with mortgage rates. I still can't find it, perhaps you can help me?
Appearances can be deceiving, don't you agree?
My statement that the "fed did nothing but its job" is simply that it bought assets so it could inject liquidity. I said nothing about which assets it bought. Those assets include MBS (since 2009). And of course that would have an effect on the secondary mortgage market.
https://fred.stlouisfed.org/series/WSHOMCB.
Note that all MBS on the Fed sheet are underwritten by Fannie/Freddie/Ginny. The Fed does not own any "non-agency" MBS.
So yes, the Fed's action when it buys assets will have an effect on that asset market. That's why the fed exists-- it buys mostly government debt and owns the primary responsibility for manipulating the market for government debt to achieve policy ends (unemployment and economy growth).
I never said the Treasury drove rates down. To the contrary, it is the deficit spending that creates inflation which drives up interest rates in general, including mortgage rates. Contra your assertion the Treasury ABSOLUTELY can create money. Any use of credit creates money. When I use my credit card, I create money. We know this must be true because when I use my card, the seller gets paid (actual) money but yet I have paid nothing for it-- yet. How is it possible for a seller to get paid without my account being deducted? How can the money be in two places at once? It cannot be. Rather, NEW MONEY was created to pay the merchant. And when that money was created, it created also a debt for me. When I pay that debt, I destroy the money I created.
So every use of credit creates money. And when the government is using $1T or more of additional credit every year, it is creating additional money. Now it may be that the Fed is doing the actual printing-- but the deficit spending is the initiating acting that creates the money and is ultimate why it exists *and* circulates.
The fed can print its own money, but it cannot put that money into circulation. It's pushing on a rope. The fed could print $5T in cash in the next month and stick it in it own vault and it would have NO macroeconomic effect. In order for that cash to have a macroeconomic effect, it must circulate. Which means it must be pulled into the economy by the FOMC operations-- commercial paper lenders. (this is ultimately why QE was ineffective, but that's another topic).
By comparison, when the Treasury borrows money to spend, it both circulates AND creates money.
Uncle Miltie was absolutely correct that "inflation is always and everywhere a monetary phenomenon", but that's not saying that it's a FED phenomenon. Friedman was saying that inflation is always the result of the aggregate money supply in proportion to aggregate demand/national income/GDP (pick your term).