May 3 (UPI) -- Warren Buffett shared his thoughts on everything from Donald Trump 's tariffs to the state of the economy Saturday, while also taking questions from shareholders. The billionaire Chairman and CEO of investment firm Berkshire Hathaway spoke at the company's annual shareholder weekend in his hometown of Omaha, Neb., which saw a record 20,000 people attend. Buffett in February celebrated 60 years at the helm of the company he founded, where he reiterated his preference for the