Why is Trump urging Walmart to absorb tariffs? How did Trump’s tariff changes impact retail prices? Why did Nvidia diversify beyond Big Tech clients? What caused Apple's AI partnership to alarm US lawmakers? How did the US-China trade truce affect shipping? Why is Warren Buffett stepping down as CEO? How are AI chatbots impacting workplace productivity? What led to the Mexican naval ship crashing into Brooklyn Bridge? Why is consumer confidence in Trump’s economy falling?