We have a pretty huge tent encampement in New Orleans under the I-10 interstate downtown, right where that elevated highway crosses Canal St. It's actually gotten a little smaller over the past year, as increasing numbers of shelter beds have come on line.

Of course, we had that big flood three years ago, which I assume most of you heard about, so there's some excuse for such a sad development to have occurred here. I'm surprised, and even shocked, to learn that it's a nationwide phenomemon.