Americans are about to re-learn that bank deposit insurance isn't free, even as Washington is doing its best to delay the coming bailout. The banking system and the federal fisc would both be better off in the long run if the political class owned up to the reality.

We're referring to the federal deposit insurance fund, which has been shrinking faster than reservoirs in the California drought. The Federal Deposit Insurance Corp. reported late last week that the fund that insures some $4.5 trillion in U.S. bank deposits fell...