[irln]

> Deposit insurance is a fundamental difference between bank IOUs and non-bank IOUs.

Deposit insurance is a fundamental difference but it's not the main difference. Individuals and most non-banks don't have access to Federal Reserve accounts and therefore access to reserves. The main distinction between a bank and a non-bank is the ability to create IOUs ultimately backed by reserves (whether they have sufficient amounts or not) which can only be created by the FR (and in this context) to back a bad IOU. Whether the new reserves go directly to backing up the IOU or indirectly via added liquidity is irrelevant. A bank can create a misguided IOU that defaults, which if too big to fail, is a liability that the FR and thus all holders of the IOUs, cash, and reserves must bear.

[baobabKoodaa]

This is not entirely accurate. Suppose a fraudulent bank decided to credit my account with a trillion dollars. The federal reserve would not honor this IOU with actual dollars. This is in stark contrast to federal reserve's ability to create a trillion dollars. They could create an actual trillion dollars and give it to a corrupt politician. A regular bank does not possess this ability.

[irln]

What does a fraudulent bank have to do with the fact that the FR is the ultimate backstop to loans (IOUs) created by a bank...a "power" you claim is the same as a non-bank created IOU or a an individual IOU? Further not sure how your example refutes my previous reply's accuracy, regardless, if a bank makes a bunch of fraudulent loans adding up to a Trillion dollars and it isn't discovered until those loans are cross-collateralized sufficiently to cause systemic risk, you can bet the FR will back those loans. Finally, given a bit of time a single Trillion dollar loan may not seem as large as it does now. :)