Since everything must be viewed with Bizarro goggles I would say this is an attempt by NBC to damage the president by making it look as though it gives a shit about something "disparaging to the President" considering the fact that 98.9% of its news broadcasts is devoted to lying aholes disparaging Bush. The rest is devoted to disparaging Cheney.
Hence this looks like an attempt to make the President look thin-skinned. If he were to invite them to sing at the White House I would laugh my ass off. And its pretty big.
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