President Bush devoted much of his national radio broadcast to the subject this morning. He is not backing down one whit. You can view his speech (which was televised this time, apparently) here. The president's remarks are 7 minutes, 51 seconds long, and everyone should see them. This is deadly serious stuff, and it's clear President Bush sees it that way.
Not surprisingly, the CNN headline running right next to the video of the speech is "Bush won't confirm report NSA spied on Americans." This story is probably going to receive a lot of oversimplified news media hype, so if you can't watch the speech, read the whole thing. (HT: Hugh Hewitt.)