Warren Buffet

OMAHA, Neb. (AP) -- Billionaire Warren Buffett has already said he thinks the U.S. economy is in a recession, and now he says the economy is getting worse.

Buffett told CNBC in a live interview Wednesday that all the data he sees from Berkshire Hathaway Inc. subsidiaries shows the economy weakening.

Everything connected with construction and with consumer, I see weakness, and if anything, it's accentuating a little bit."

Buffett also said he thinks inflation is picking up, especially in steel and oil, so it should be a concern for the Federal Reserve.

But Buffett said he would have been surprised if the Federal Reserve were to announce a rate cut Wednesday afternoon.

The Fed left rates unchanged.

"I think the Fed has to be careful not to do anything that signals that they regard inflation as a secondary goal and something they'll worry about later," he said.

Buffett also said he believes supply and demand, not market speculation, is what's driving oil prices to new heights.

Oil futures fell Wednesday after the Energy Department said the nation's supplies of fuel and oil were larger than expected last week, but prices remain above $130 a barrel.

Buffett said he disagrees with the idea that speculation was driving oil prices higher. At least nine bills proposing limits on that oil speculation have been introduced in Congress in recent weeks.

"In my adult lifetime, up until the last year or two, there's been a huge amount of excess supply available," Buffett said. "We don't have excess capacity in the world anymore, and that's why you're seeing these oil prices."

Buffett said he doesn't think it makes sense to impose a windfall tax on oil companies that have benefited from the high price of oil when other commodity prices have also increased. Steel, corn and soybean prices are all up significantly.

"I don't think any candidate in his right mind -- with the number of electoral votes in farm states -- would say that you ought to tax farmers specially because they're getting a windfall," Buffett said.

When asked about politics, Buffett said he doesn't think Democrat Barack Obama or Republican John McCain will have trouble raising money in the presidential race.

Buffett was backing both Obama and Hillary Rodham Clinton throughout the primaries, but since Clinton dropped out of the race, he has been supporting Obama.

"I think Barack is going to have plenty of money," he said.