M
morganist
This seems somewhat wrong to me. Excess reserves are held at the fed in electronic form and would be of no use were there to be a "run on the bank" and depositors all tried to withdrew their money and demand cash. I think the regulation (LCR) is more there to protect the Government than it is to protect depositors.
Whether a bank is technically solvent or not makes no difference to the depositor, other than perhaps causing a minor brief inconvenience. The Fed will fully protect any depositor up to the F.D.I.C. limit, which in a crisis can technically be raised without limit, regardless of whether a particular bank is solvent or not. Banks can not go bankrupt under the U.S. Federal Reserve-Treasury system. They can become insolvent however, in which case they will undergo "resolution." Regardless depositors are protected. You can write a check drawn on an insolvent bank, and so long as you have deposited funds to cover the check, the check will clear through the Fed system, no problem.
However, if in a bank run where the public went to the bank and demanded to withdraw their deposits in the form of cash, the bank could temporarily, and briefly, run out of cash. But I don't think the LCR regulations that Martinghoul was referring to, nor swollen bank reserves due to QE, have anything to do with that.
Read the linked article I wrote, see below.
http://morganisteconomics.blogspot....-and-bank-run-there-is.html?q=credit+crunches