Why does it invalidate the 8/17 change? This is an agreement between the FHFA and the Treasury where FHFA acts as shareholder -in its private role in the shoes of Fannie Mae and Freddie Mac- and so does the Treasury based on its warrants and Sr. holdings (The Treasury's interests are that of a shareholder). What it tells you is that FHFA entered into a flawed agreement on 8/17 that makes it impossible to fulfill its own mandate as conservator.