He was summarily axed. Not for what he was going to perform but what he has in his back catalog and might've done in his past.
Nothing illegal, mind you. Just something that didn't measure up for the prudes.
Where's the outrage over Macy Gray who butchered the national anthem in her home town? She's supposed to perform at the inauguration as well. At least in her case, she's shown she has no respect for national institutions and thus has no reason to perform at this civil ceremony.
The story is a hoax. KR was never invited nor confirmed to appear.
No, it was NOT announced. Ever.
If by banned you mean 'disinvited,' then okay. So if you want your kids to listen to Kid Rock, go get them a CD.