I don't think there has been such a power shift, even in time of war. This is truly unprecedented. I don't think any other administration would have the chutzpah to do this--even Nixon. Roosevelt would find it amusing but he wouldn't have dreamed of going this far. Bush/Paulson obviously want Congress way, way out of the loop for some reason.
Yale Law deputy dean Jon Macey on the sought-for $700 billion, no-strings, blank check for the Executive to spend in any way and on any corporation it chooses, with a guarantee of immunity from future investigative review and/or prosecution by Congress or in the Courts. On NPR's great new pod series, Planet Money