OMAHA, Neb._It's almost unthinkable that billionaire investor Warren Buffett would be turned away from an event, especially in his hometown of Omaha. But he wasn't taking any chances Wednesday.

Buffett says he called organizers of U.S. Sen. Ben Nelson's town hall meeting on health care reform to make sure he could get a seat.

He did _ in the front row.

He offered no opinion on the meeting or proposed health care reform, but he did say he "learned a lot about what's on people's minds."

Buffett could have more than a passing interest in the debate.

His company, Berkshire Hathaway Inc., generates about half its revenue from insurance businesses, although most don't deal in health insurance. One subsidiary, Medical Protective Co., does sell medical malpractice insurance.