Creative Commons logo on Barack Obama's website?

I just noticed that, in the pale small print at the bottom of Obama's website, is a little Creative Commons logo. I can't really figure out why it's there, though. It doesn't link to anything, and there isn't anything I saw in the terms of service or elsewhere as to why this site has a CC logo on it. In fact, their ToS extracts a perpetual exploitation license from content contributors (like most commercial websites), which is actually rather contrary to Creative Commons principles, and leaves me wondering if their webmasters and legal people have any clue what they're doing....