As far as political crises go, a yawning kid at a Bush speech shouldn’t be a major one. CNN reported, though, that the White House was claiming the video was faked or manipulated, but then CNN backed off that claim.
I bought CNN’s line, but it has been pointed out to me that this is standard operating procedure for both the White House and CNN: the former likes to put out attacking rumors anonymously and see if they fly, then deny responsibility — revealing Valerie Plame as a CIA operative, suggesting Richard Clarke is gay or hearing voices, etc. And CNN, perhaps out of some desperation for the crumbs of access it thinks it needs to compete with Fox, folded the instant the White House told it to. Which is why we don’t watch CNN.