So this morning, Usher just showed up at the White House, apparently uninvited, and he and his entourage just walked in the northwest gate. But President Obama wasn't home.

Informed that Obama had just left for Iowa and wouldn't be inside, the singer seemed disappointed.

"He did?" he said.

What an odd story! Usher just came over for a chat, apparently. And there is an open door-to-R&B superstars policy, at the White House, even when the President is a thousand miles away. At least Tiger Woods and the White Sox were actually invited.